// width 200 height 160



function Browser() {

  this.version = navigator.appVersion;

  this.agent = navigator.userAgent;

  this.dom = document.getElementById;



  this.ie5 = this.version.indexOf("MSIE 5")>-1;

  this.ie6 = this.version.indexOf("MSIE 6")>-1;

  this.ie4 = document.all && !this.dom;

  this.ie = this.ie4 || this.ie5 || this.ie6;



  this.ns6 = this.dom && this.agent.indexOf("Netscape6")>-1;

  this.ns4 = document.layers && !this.dom;

}



browser = new Browser();



var calendarMonth;

var calendarYear;

var dateObj;

var callback;



var SMONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

var MONTHS = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];



var DOMONTH = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

var LDOMONTH =  [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];





function getDaysOfMonth() {

	if ((calendarYear % 4) == 0) {

		if ((calendarYear % 100) == 0 && (calendarYear % 400) != 0)

			return DOMONTH[calendarMonth];

		return LDOMONTH[calendarMonth];

	} else return DOMONTH[calendarMonth];

}



function calShow(obj, oName, cbf) {

  callback = cbf;

  if(cbf==null) callback = '';

  var curDate = new Date();

  dateObj = eval("document."+oName);

  var dateValue = dateObj.value;

  if(dateValue.length <11 || dateValue.length>12) {

    calendarMonth = curDate.getMonth();

    calendarYear = curDate.getUTCFullYear();

  } else {

    var strMonth = dateValue.substring(0,3);

    for(var i=0;i<SMONTHS.length;i++)

      if(strMonth == SMONTHS[i]) {

        calendarMonth = i;

        break;

      }

    // var strDay = dateValue.substring(5,7);

    calendarYear = eval(dateValue.substring(7));

  }



  var objCalDiv = document.getElementById("the_calendar");

  var x=0;y=obj.offsetHeight;

  for(var i=0;i<15 && obj!=null;i++) {

    x+=obj.offsetLeft;

    y+=obj.offsetTop;

    obj=obj.offsetParent;

  }

  var oleft = x - 64;

  var otop = y + 3;



  // alert(otop + " " + document.body.offsetHeight);

  if(otop + 180 > document.body.offsetHeight) otop = y - 174;

  if(oleft + 220 > document.body.offsetWidth) oleft = x + dateObj.offsetWidth - 200;

  if(oleft < 0) oleft = 10;

  if(otop < 0) otop = 10;



  objCalDiv.style.left = oleft;

  objCalDiv.style.top = otop;



  calBuild();



  if(browser.ie) objCalDiv.filters[0].Apply();

  objCalDiv.style.visibility="visible";

  if(browser.ie) objCalDiv.filters[0].Play();

}



function calYdec() {

  calendarYear--;

  calBuild();

}



function calYinc() {

  calendarYear++;

  calBuild();

}



function calMdec() {

  calendarMonth--;

  if(calendarMonth<0) {

    calendarYear--;

    calendarMonth=11;

  }

  calBuild();

}



function calMinc() {

  calendarMonth++;

  if(calendarMonth>11) {

    calendarYear++;

    calendarMonth=0;

  }

  calBuild();

}



function calBuild() {

  var curDate = new Date();

  var curDay = 0;

  if(calendarYear == curDate.getUTCFullYear() && calendarMonth == curDate.getMonth()) curDay=curDate.getDate();



  var cDate = new Date(calendarYear,calendarMonth,1);

  var tdMonth = document.getElementById("month");

  tdMonth.innerHTML = MONTHS[calendarMonth] + " " + calendarYear;



  var ds = cDate.getDay();

  if(ds==0) ds=7;



  var dom = getDaysOfMonth();

  for(var i=1;i<=35;i++) {

    var tday = document.getElementById("day"+i);

    if(i>=ds && i<ds+dom) {

      tday.day = i-ds+1;

      if(tday.day==curDay) tday.innerHTML="<b><font color='FF8000'>"+tday.day+"</font></b>";

      else tday.innerHTML = tday.day;

      tday.className="calhand";

    } else {

      tday.day=null;

      tday.innerHTML="&nbsp;";

      tday.className="";

    }

  }

}



function dayon(obj) {

  if(!obj.day) return;

  obj.className="calhandl";

}



function dayoff(obj) {

  if(!obj.day) return;

  obj.className="calhand";

}



function daysel(obj) {

  if(!obj.day) return;

  var saveval = dateObj.value;

  dateObj.value=SMONTHS[calendarMonth] + " " + obj.day + ", " +calendarYear;

  if(saveval != dateObj.value && callback.length>0) eval(callback);

  calHide();

}



function calClear() {

  dateObj.value="-";

  calHide();

}



function calHide() {

  var objCalDiv = document.getElementById("the_calendar");

  if(browser.ie) objCalDiv.filters[0].Apply();

  objCalDiv.style.visibility="hidden";

  if(browser.ie) objCalDiv.filters[0].Play();

}