var weekend = [0,6];
var weekendColor = "#e0e0e0";
var fontface = "Verdana";
var fontsize = 2;

var gNow = new Date();
var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;

Calendar.Months = ["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"];

// Non-Leap year Month days..
Calendar.DOMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
// Leap year Month days..
Calendar.lDOMonth = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

function Calendar(p_item, p_WinCal, p_month, p_year, p_format, qsname, minstay) {
   if ((p_month == null) && (p_year == null))   return;

   if (p_WinCal == null)
      this.gWinCal = ggWinCal;
   else
      this.gWinCal = p_WinCal;
   
   if (p_month == null) {
      this.gMonthName = null;
      this.gMonth = null;
      this.gYearly = true;
   } else {
      this.gMonthName = Calendar.get_month(p_month);
      this.gMonth = new Number(p_month);
      this.gYearly = false;
   }

   this.qsname = qsname;
   this.minstay = minstay;

   this.gYear = p_year;
   this.gFormat = p_format;
   this.gBGColor = "white";
   this.gFGColor = "black";
   this.gTextColor = "black";
   this.gHeaderColor = "black";
   this.gReturnItem = p_item;
}

Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;
Calendar.print = Calendar_print;

function Calendar_get_month(monthNo) {
   return Calendar.Months[monthNo];
}

function Calendar_get_daysofmonth(monthNo, p_year) {
   /* 
   Check for leap year ..
   1.Years evenly divisible by four are normally leap years, except for... 
   2.Years also evenly divisible by 100 are not leap years, except for... 
   3.Years also evenly divisible by 400 are leap years. 
   */
   if ((p_year % 4) == 0) {
      if ((p_year % 100) == 0 && (p_year % 400) != 0)
         return Calendar.DOMonth[monthNo];
   
      return Calendar.lDOMonth[monthNo];
   } else
      return Calendar.DOMonth[monthNo];
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
   /* 
   Will return an 1-D array with 1st element being the calculated month 
   and second being the calculated year 
   after applying the month increment/decrement as specified by 'incr' parameter.
   'incr' will normally have 1/-1 to navigate thru the months.
   */
   var ret_arr = new Array();
   
   if (incr == -1) {
      // B A C K W A R D
      if (p_Month == 0) {
         ret_arr[0] = 11;
         ret_arr[1] = parseInt(p_Year) - 1;
      }
      else {
         ret_arr[0] = parseInt(p_Month) - 1;
         ret_arr[1] = parseInt(p_Year);
      }
   } else if (incr == 1) {
      // F O R W A R D
      if (p_Month == 11) {
         ret_arr[0] = 0;
         ret_arr[1] = parseInt(p_Year) + 1;
      }
      else {
         ret_arr[0] = parseInt(p_Month) + 1;
         ret_arr[1] = parseInt(p_Year);
      }
   }
   
   return ret_arr;
}

function Calendar_print() {
   ggWinCal.print();
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
   /* 
   Will return an 1-D array with 1st element being the calculated month 
   and second being the calculated year 
   after applying the month increment/decrement as specified by 'incr' parameter.
   'incr' will normally have 1/-1 to navigate thru the months.
   */
   var ret_arr = new Array();
   
   if (incr == -1) {
      // B A C K W A R D
      if (p_Month == 0) {
         ret_arr[0] = 11;
         ret_arr[1] = parseInt(p_Year) - 1;
      }
      else {
         ret_arr[0] = parseInt(p_Month) - 1;
         ret_arr[1] = parseInt(p_Year);
      }
   } else if (incr == 1) {
      // F O R W A R D
      if (p_Month == 11) {
         ret_arr[0] = 0;
         ret_arr[1] = parseInt(p_Year) + 1;
      }
      else {
         ret_arr[0] = parseInt(p_Month) + 1;
         ret_arr[1] = parseInt(p_Year);
      }
   }
   
   return ret_arr;
}

// This is for compatibility with Navigator 3, we have to create and discard one object before the prototype object exists.
new Calendar();

Calendar.prototype.getMonthlyCalendarCode = function() {
   var vCode = "";
   var vHeader_Code = "";
   var vData_Code = "";
   
   // Begin Table Drawing code here..
   vCode = vCode + "<TABLE CELLPADDING=1 CELLSPACING=0 BORDER=0 BGCOLOR='white'>";
   
   vHeader_Code = this.cal_header();
   vData_Code = this.cal_data();
   vCode = vCode + vHeader_Code + vData_Code;
   
   vCode = vCode + "</TABLE>";
   
   return vCode;
}

Calendar.prototype.show = function() {
   var vCode = "";
   
   this.gWinCal.document.open();

   // Setup the page...
   this.wwrite("<html>");
   this.wwrite("<head><title>Calendar</title>");
   this.wwrite("<SCR" + "IPT LANGUAGE='JavaScript'>" +
               "function newdate(what,form,dd,mm,yyyy) {" +
               "if (what.match (/arrival/i) != 'arrival') return; " +
               "d1 = new Date (yyyy, mm, dd);" +
               "for(ii=0;ii<"+this.minstay+";ii++){dd++;}; d2 = new Date (yyyy, mm, dd);" +
               "self.opener.document.bke_search"+this.qsname+".bke_arrival_day.value = d1.getDate(); " +
               "self.opener.document.bke_search"+this.qsname+".bke_departure_day.value = d2.getDate();" +
               "self.opener.document.bke_search"+this.qsname+".bke_arrival_month.value = d1.getMonth() + 1;" +
               "self.opener.document.bke_search"+this.qsname+".bke_departure_month.value = d2.getMonth() + 1;" +
               "self.opener.document.bke_search"+this.qsname+".bke_arrival_year.value = d1.getFullYear();" +
               "self.opener.document.bke_search"+this.qsname+".bke_departure_year.value = d2.getFullYear(); } </SCR" + "IPT>");

   this.wwrite('<link href="/style.css" rel="stylesheet" type="text/css">');
   this.wwrite("</head>");

   this.wwrite('<body style="margin-left: 10px"><span class="bke_calmonth">');
   this.wwriteA(this.gMonthName + " " + this.gYear);
   this.wwriteA("</span><BR>");

   // Show navigation buttons
   var prevMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, -1);
   var prevMM = prevMMYYYY[0];
   var prevYYYY = prevMMYYYY[1];

   var nextMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, 1);
   var nextMM = nextMMYYYY[0];
   var nextYYYY = nextMMYYYY[1];
   
   this.wwrite("<TABLE WIDTH='100%' BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR='#e0e0e0'><TR><TD ALIGN=center class='bke_caltopnav'>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
      ", '"+ this.qsname +"', '"+ this.minstay +"');" +
      "\"><span class='bke_caltopnav'><<</span><\/A>]</TD><TD ALIGN=center class='bke_caltopnav'>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
      ", '"+ this.qsname +"', '"+ this.minstay +"');" +
      "\"><span class='bke_caltopnav'><</span><\/A>]</TD><TD ALIGN=center class='bke_caltopnav'>");
   this.wwrite("[<A HREF=\"javascript:window.close();\"><span class='bke_caltopnav'>Close</span></A>]</TD><TD ALIGN=center class='bke_caltopnav'>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
      ", '"+ this.qsname +"', '"+ this.minstay +"');" +
      "\"><span class='bke_caltopnav'>></span><\/A>]</TD><TD ALIGN=center class='bke_caltopnav'>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
      ", '"+ this.qsname +"', '"+ this.minstay +"');" +
      "\"><span class='bke_caltopnav'>>></span><\/A>]</TD></TR></TABLE><BR>");

   // Get the complete calendar code for the month..
   vCode = this.getMonthlyCalendarCode();
   this.wwrite(vCode);

   this.wwrite("</font></body></html>");
   this.gWinCal.document.close();
}

Calendar.prototype.showY = function() {
   var vCode = "";
   var i;
   var vr, vc, vx, vy;     // Row, Column, X-coord, Y-coord
   var vxf = 285;       // X-Factor
   var vyf = 200;       // Y-Factor
   var vxm = 10;        // X-margin
   var vym;          // Y-margin
   if (isIE)   vym = 75;
   else if (isNav)   vym = 25;
   
   this.gWinCal.document.open();

   this.wwrite("<html>");
   this.wwrite("<head><title>Calendar</title>");
   this.wwrite("<style type='text/css'>\n<!--");
   for (i=0; i<12; i++) {
      vc = i % 3;
      if (i>=0 && i<= 2)   vr = 0;
      if (i>=3 && i<= 5)   vr = 1;
      if (i>=6 && i<= 8)   vr = 2;
      if (i>=9 && i<= 11)  vr = 3;
      
      vx = parseInt(vxf * vc) + vxm;
      vy = parseInt(vyf * vr) + vym;

      this.wwrite(".lclass" + i + " {position:absolute;top:" + vy + ";left:" + vx + ";}");
   }
   this.wwrite("-->\n</style>");
   this.wwrite("</head>");

   this.wwrite("<body " + 
      "link=\"" + this.gLinkColor + "\" " + 
      "vlink=\"" + this.gLinkColor + "\" " +
      "alink=\"" + this.gLinkColor + "\" " +
      "text=\"" + this.gTextColor + "\">");
   this.wwrite("<FONT FACE='" + fontface + "' SIZE=2><B>");
   this.wwrite("Year : " + this.gYear);
   this.wwrite("</B><BR>");

   // Show navigation buttons
   var prevYYYY = parseInt(this.gYear) - 1;
   var nextYYYY = parseInt(this.gYear) + 1;
   
   this.wwrite("<TABLE WIDTH='100%' BORDER=1 CELLSPACING=0 CELLPADDING=0 BGCOLOR='#e0e0e0'><TR><TD ALIGN=center>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', null, '" + prevYYYY + "', '" + this.gFormat + "'" +
      ");" +
      "\" alt='Prev Year'><<<\/A>]</TD><TD ALIGN=center>");
   this.wwrite("[<A HREF=\"javascript:window.print();\">Print</A>]</TD><TD ALIGN=center>");
   this.wwrite("[<A HREF=\"" +
      "javascript:window.opener.Build(" + 
      "'" + this.gReturnItem + "', null, '" + nextYYYY + "', '" + this.gFormat + "'" +
      ");" +
      "\">>><\/A>]</TD></TR></TABLE><BR>");

   // Get the complete calendar code for each month..
   var j;
   for (i=11; i>=0; i--) {
      if (isIE)
         this.wwrite("<DIV ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");
      else if (isNav)
         this.wwrite("<LAYER ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");

      this.gMonth = i;
      this.gMonthName = Calendar.get_month(this.gMonth);
      vCode = this.getMonthlyCalendarCode();
      this.wwrite(this.gMonthName + "/" + this.gYear + "<BR>");
      this.wwrite(vCode);

      if (isIE)
         this.wwrite("</DIV>");
      else if (isNav)
         this.wwrite("</LAYER>");
   }

   this.wwrite("</font><BR></body></html>");
   this.gWinCal.document.close();
}

Calendar.prototype.wwrite = function(wtext) {
   this.gWinCal.document.writeln(wtext);
}

Calendar.prototype.wwriteA = function(wtext) {
   this.gWinCal.document.write(wtext);
}

Calendar.prototype.cal_header = function() {
   var vCode = "";
   
   vCode = vCode + "<TR>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Sun</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Mon</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Tue</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Wed</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Thu</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Fri</TD>";
   vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%' class='bke_calheader'>Sat</TD>";
   vCode = vCode + "</TR>";
   
   return vCode;
}

Calendar.prototype.cal_data = function() {
   var vDate = new Date();
   vDate.setDate(1);
   vDate.setMonth(this.gMonth);
   vDate.setFullYear(this.gYear);

   var vFirstDay=vDate.getDay();
   var vDay=1;
   var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
   var vOnLastDay=0;
   var vCode = "";

   /*
   Get day for the 1st of the requested month/year..
   Place as many blank cells before the 1st day of the month as necessary. 
   */

   vCode = vCode + "<TR>";
   for (i=0; i<vFirstDay; i++) {
      vCode = vCode + "<TD WIDTH='14%'" + this.write_weekend_string(i) + "> </TD>";
   }

   // Write rest of the 1st week
   for (j=vFirstDay; j<7; j++) {
      vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
         "<A CLASS='bke_calday' HREF='#' " + 
            "onClick=\"self.opener.document." + this.gReturnItem + 
            "_day.value='" + vDay + "'; self.opener.document." + this.gReturnItem +
            "_month.value='" + (this.gMonth + 1.0) + "'; self.opener.document." + this.gReturnItem +
            "_year.value='" + this.gYear + "'; newdate ('" + this.gReturnItem +
            "', self.opener.document.search, " + vDay + "," + this.gMonth + "," + this.gYear + 
	    "); if (self.opener.document.getElementById('bke_num_nights')) {self.opener.update_numstay()}; window.close();\">" + 
            this.format_day(vDay) + 
         "</A>&nbsp;" + 
         "</FONT></TD>";
      vDay=vDay + 1;
   }
   vCode = vCode + "</TR>";

   // Write the rest of the weeks
   for (k=2; k<7; k++) {
      vCode = vCode + "<TR>";

      for (j=0; j<7; j++) {
         vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
            "<A CLASS='bke_calday' HREF='#' " + 
            "onClick=\"self.opener.document." + this.gReturnItem + 
            "_day.value='" + vDay + "'; self.opener.document." + this.gReturnItem +
            "_month.value='" + (this.gMonth + 1.0) + "'; self.opener.document." + this.gReturnItem +
            "_year.value='" + this.gYear + "';newdate ('" + this.gReturnItem +
            "',self.opener.document.search, " + vDay + "," + this.gMonth + "," + this.gYear + 
	    "); if (self.opener.document.getElementById('bke_num_nights')) {self.opener.update_numstay()}; window.close();\">" + 
            this.format_day(vDay) + 

            "</A>&nbsp;" + 
            "</FONT></TD>";
         vDay=vDay + 1;

         if (vDay > vLastDay) {
            vOnLastDay = 1;
            break;
         }
      }

      if (j == 6)
         vCode = vCode + "</TR>";
      if (vOnLastDay == 1)
         break;
   }
   
   // Fill up the rest of last week with proper blanks, so that we get proper square blocks
   for (m=1; m<(7-j); m++) {
      if (this.gYearly)
         vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%'" + this.write_weekend_string(j+m) + 
         "><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'> </FONT></TD>";
      else
         vCode = vCode + "<TD ALIGN=RIGHT WIDTH='14%'" + this.write_weekend_string(j+m) + 
         "><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'>" + m + "&nbsp;</FONT></TD>";
   }
   
   return vCode;
}

Calendar.prototype.format_day = function(vday) {
   var vNowDay = gNow.getDate();
   var vNowMonth = gNow.getMonth();
   var vNowYear = gNow.getFullYear();

   if (vday == vNowDay && this.gMonth == vNowMonth && this.gYear == vNowYear)
      return ("<FONT COLOR=\"RED\"><B>" + vday + "</B></FONT>");
   else
      return (vday);
}

Calendar.prototype.write_weekend_string = function(vday) {
   var i;

   // Return special formatting for the weekend day.
   for (i=0; i<weekend.length; i++) {
      if (vday == weekend[i])
         return (" BGCOLOR=\"" + weekendColor + "\"");
   }
   
   return "";
}

Calendar.prototype.format_data = function(p_day) {
   var vData;
   var vMonth = 1 + this.gMonth;
   vMonth = (vMonth.toString().length < 2) ? "0" + vMonth : vMonth;
   var vMon = Calendar.get_month(this.gMonth).substr(0,3).toUpperCase();
   var vFMon = Calendar.get_month(this.gMonth).toUpperCase();
   var vY4 = new String(this.gYear);
   var vY2 = new String(this.gYear.substr(2,2));
   var vDD = (p_day.toString().length < 2) ? "0" + p_day : p_day;

   switch (this.gFormat) {
      case "MM\/DD\/YYYY" :
         vData = vMonth + "\/" + vDD + "\/" + vY4;
         break;
      case "MM\/DD\/YY" :
         vData = vMonth + "\/" + vDD + "\/" + vY2;
         break;
      case "MM-DD-YYYY" :
         vData = vMonth + "-" + vDD + "-" + vY4;
         break;
      case "MM-DD-YY" :
         vData = vMonth + "-" + vDD + "-" + vY2;
         break;

      case "DD\/MON\/YYYY" :
         vData = vDD + "\/" + vMon + "\/" + vY4;
         break;
      case "DD\/MON\/YY" :
         vData = vDD + "\/" + vMon + "\/" + vY2;
         break;
      case "DD-MON-YYYY" :
         vData = vDD + "-" + vMon + "-" + vY4;
         break;
      case "DD-MON-YY" :
         vData = vDD + "-" + vMon + "-" + vY2;
         break;

      case "DD\/MONTH\/YYYY" :
         vData = vDD + "\/" + vFMon + "\/" + vY4;
         break;
      case "DD\/MONTH\/YY" :
         vData = vDD + "\/" + vFMon + "\/" + vY2;
         break;
      case "DD-MONTH-YYYY" :
         vData = vDD + "-" + vFMon + "-" + vY4;
         break;
      case "DD-MONTH-YY" :
         vData = vDD + "-" + vFMon + "-" + vY2;
         break;

      case "DD\/MM\/YYYY" :
         vData = vDD + "\/" + vMonth + "\/" + vY4;
         break;
      case "DD\/MM\/YY" :
         vData = vDD + "\/" + vMonth + "\/" + vY2;
         break;
      case "DD-MM-YYYY" :
         vData = vDD + "-" + vMonth + "-" + vY4;
         break;
      case "DD-MM-YY" :
         vData = vDD + "-" + vMonth + "-" + vY2;
         break;

      default :
         vData = vMonth + "\/" + vDD + "\/" + vY4;
   }

   return vData;
}

function Build(p_item, p_month, p_year, p_format, qsname, minstay, cssUri) {
   var p_WinCal = ggWinCal;
   gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format, qsname, minstay);
	gCal.cssUri = cssUri;

   // Customize your Calendar here..
   gCal.gBGColor="white";
   gCal.gLinkColor="black";
   gCal.gTextColor="black";
   gCal.gHeaderColor="darkgreen";

   // Choose appropriate show function
   if (gCal.gYearly) gCal.showY();
   else  gCal.show();
}

function show_calendar() {
   /* 
      p_month : 0-11 for Jan-Dec; 12 for All Months.
      p_year   : 4-digit year
      p_format: Date format (mm/dd/yyyy, dd/mm/yy, ...)
      p_item   : Return Item.
   */

   p_item = arguments[0];
   if (arguments[1] == null)
      p_month = new String(gNow.getMonth());
   else
      p_month = arguments[1];
   if (arguments[2] == "" || arguments[2] == null)
      p_year = new String(gNow.getFullYear().toString());
   else
      p_year = arguments[2];
   if (arguments[3] == null)
      p_format = "MM/DD/YYYY";
   else
      p_format = arguments[3];

   qsname = arguments[4];
   if (arguments[5] == '') {
	   minstay = 1;
   } else {
	   minstay = arguments[5];
   }

var cssUri = arguments[6];

   vWinCal = window.open("", "Calendar", 
      "width=235,height=225,status=no,resizable=no,top=200,left=200");
   vWinCal.opener = self;
   ggWinCal = vWinCal;

   Build(p_item, p_month, p_year, p_format, qsname, minstay, cssUri);
}
/*
Yearly Calendar Code Starts here
*/
function show_yearly_calendar(p_item, p_year, p_format, qsname, minstay) {
   // Load the defaults..
   if (p_year == null || p_year == "")
      p_year = new String(gNow.getFullYear().toString());
   if (p_format == null || p_format == "")
      p_format = "MM/DD/YYYY";

   var vWinCal = window.open("", "Calendar", "scrollbars=yes");
   vWinCal.opener = self;
   ggWinCal = vWinCal;

   Build(p_item, null, p_year, p_format, qsname, minstay);
}