/*
	*****************************************************************************************************
	*	DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
	*****************************************************************************************************
*/


	// Declaring valid date character, minimum year and maximum year
	var dtCh 	=	"/";
	var minYear	=	1900;
	var maxYear	=	2100;

	function isInteger(s)
	{
		var i;
    	for (i = 0; i < s.length; i++)
    	{   
        	// Check that current character is number.
        	var c = s.charAt(i);
        	if (((c < "0") || (c > "9"))) 
        		return false;
    	}
    		// All characters are numbers.
    	return true;
	}

	function stripCharsInBag(s, bag)
	{
		var i;
    	var returnString = "";
    	// Search through string's characters one by one.
    	// If character is not in bag, append to returnString.
    	for (i = 0; i < s.length; i++){   
    	    var c = s.charAt(i);
    	    if (bag.indexOf(c) == -1) returnString += c;
    	}
    	return returnString;
	}

	function daysInFebruary (year)
	{
		// February has 29 days in any year evenly divisible by four,
	    // EXCEPT for centurial years which are not also divisible by 400.
	    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
	}
	
	function DaysArray(n) 
	{
		for (var i = 1; i <= n; i++) 
		{
			this[i] = 31;
			if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
			if (i==2) {this[i] = 29}
   		}	 
   		return this;
	}

	function isDate(dtStr)
	{
		var daysInMonth = DaysArray(12);
		var pos1=dtStr.indexOf(dtCh);
		var pos2=dtStr.indexOf(dtCh,pos1+1);
		var strMonth=dtStr.substring(0,pos1);
		var strDay=dtStr.substring(pos1+1,pos2);
		var strYear=dtStr.substring(pos2+1);
		strYr=strYear;
		if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
		if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
		for (var i = 1; i <= 3; i++) 
		{
			if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
		}
		month=parseInt(strMonth);
		day=parseInt(strDay);
		year=parseInt(strYr);
		if (pos1==-1 || pos2==-1)
		{
			window.statusbar = "The date format should be : mm/dd/yyyy";
			return false;
		}
		if (strMonth.length<1 || month<1 || month>12)
		{
			window.statusbar = "Please enter a valid month";
			return false;
		}
		if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month])
		{
			window.statusbar = "Please enter a valid day";
			return false;
		}
		if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
		{
			window.statusbar = "Please enter a valid 4 digit year between "+minYear+" and "+maxYear;
			return false;
		}
		if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false)
		{
			window.statusbar = "Please enter a valid date";
			return false;
		}
		return true;
	}

	function AppendZero(nNum)
	{
		if (nNum <= 9 )
		{
			return "0" + nNum;
		}	
		else
		{	
			return nNum;
		}	
	}	

	
	/*
		function ValidateForm(){
		var dt=document.frmSample.txtDate
		if (isDate(dt.value)==false){
			dt.focus()
			return false
		}
	    return true
	 }
	*/


	function GetMonthName(iMonth)
	{
		switch (iMonth)
		{
			case 1:
				mN = 'January';
				break;	
			case 2:
				mN = 'February';
				break;	
			case 3:
				mN = 'March';
				break;	
			case 4:
				mN =  'April';
				break;	
			case 5:
				mN =  'May';
				break;	
			case 6:
				mN =  'June';
				break;	
			case 7:
				mN =  'July';
				break;	
			case 8:
				mN =  'August';
				break;	
			case 9:
				mN =  'September';
				break;	
			case 10:
				mN =  'October';
				break;	
			case 11:
				mN =  'November';
				break;	
			case 12:
				mN =  'December';
				break;	
		}
		return mN;
	}
	
	
	function OpenPopupWindow(sURL,nWd,nHt)
	{
		window.open(sURL ,'mywindow','width=' + nWd + ',height='+ nHt +',scrollbars=no')
	}