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){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("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){
		alert("Please enter a valid date")
		return false
	}
return true
}


function checknum(objName)
	{
		var checkOK = "0123456789.";
		var checkStr = objName;
		var allValid = true;
		var decPoints = 0;
		var allNum = "";

		for (i = 0;  i< checkStr.value.length;  i++)
		{
			ch = checkStr.value.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
				if (ch == checkOK.charAt(j))
				break;
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
			if (ch != ",")
				allNum += ch;
		}
	   if (!allValid)
		{	
			objName.focus();
			objName.select();
			return (false);
		}
		else
			return (true);
	
	}

function checkemail(objName)
	{
		
		var checkOK = "@.";
		var checkStr = objName;
		var allNum = "";
        var count=0;
        var countp=0;  
		for (i = 0;  i< checkStr.value.length;  i++)
		{
			if(checkStr.value.charAt(i)=="@")
			   count = count+1;
			else if (checkStr.value.charAt(i)==".")   
			   countp= countp+1;
			
		}
			if(count==1 & countp<=3 & countp > 0)
				return (true);
			else
			    return(false);	
	}

function checkchar(objName)
	{
		var checkOK = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_ ";
		var checkStr = objName;
		var allValid = true;
		var decPoints = 0;
		var allNum = "";

		for (i = 0;  i< checkStr.value.length;  i++)
		{
			ch = checkStr.value.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
				if (ch == checkOK.charAt(j))
				break;
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
			if (ch != ",")
				allNum += ch;
		}
		if (!allValid)
		{	
			objName.focus();
			objName.select();
			return (false);
		}
		else
			return (true);
	}
	
	function isLengthRange(oObj, iMin, iMax)
		{
			var iLength		= oObj.value.length;
			var bInRange	= (iLength >= iMin && iLength <= iMax);
			var sCharsLeft	= "Characters left : "+ (iMax - iLength);
			var sErrorMsg	= "You can't enter less than "+ iMin +" characters or more than "+ iMax +" characters."

			if (bInRange)
				window.status	= sCharsLeft;
			else
			{
				alert(sErrorMsg);
				oObj.value	= oObj.value.substring(iMin,iMax);
			}

			return bInRange;
		}
		
function changeCase(frmObj) 
{
	var index;
	var tmpStr;
	var tmpChar;
	var preString;
	var postString;
	var strlen;
	tmpStr = frmObj.value.toLowerCase();
	strLen = tmpStr.length;
	if (strLen > 0)
	{
		for (index = 0; index < strLen; index++)  
		{
			if (index == 0)  
			{
				tmpChar = tmpStr.substring(0,1).toUpperCase();
				postString = tmpStr.substring(1,strLen);
				tmpStr = tmpChar + postString;
			}
			else 
			{
				tmpChar = tmpStr.substring(index, index+1);
				if (tmpChar == " " && index < (strLen-1))  
				{
					tmpChar = tmpStr.substring(index+1, index+2).toUpperCase();
					preString = tmpStr.substring(0, index+1);
					postString = tmpStr.substring(index+2,strLen);
					tmpStr = preString + tmpChar + postString;
				}//end of if tmpchar
			}// end of else
		}//end of for
	}//end of if strlen
	frmObj.value = tmpStr;
}// end of function


//Function to check Leap Year and correct Day Accroding to It
function checkleap(objyear,objmonth,objday)
{

	var month = objmonth;
	var day = objday;
	var year = objyear
	var leapvalue;
	if(month.value==2)
	{
		if(objyear.value % 4 == 0)
		{
			if(day.value>29)
				day.value=29;
		}
		else
		{
			if(day.value>28)
				day.value=28;
		}
	}
	else if(month.value==4)
	{
		if(day.value>30)
			day.value=30
	}
	else if(month.value==6)
	{
		if(day.value>30)
			day.value=30
	}
	else if(month.value==9)
	{
		if(day.value>30)
			day.value=30
	}
	else if(month.value==11)
	{
		if(day.value>30)
			day.value=30
	}
}

function fnchecknum(e)
{
	if(e.keyCode<48 || e.keyCode>57)
	{
		if(e.keyCode==46)
			return true;
		else
			return false;
	}
}

function fnchecknumwithdot(obj,e)
{
	var dotexist = 0;
	var i = 0;
	var strlen = obj.value.length;
	var strval = obj.value;
	if(e.keyCode<48 || e.keyCode>57)
	{
		if(e.keyCode==46)
		{
			for(i=0;i!=strlen;i++)
			{
				if(strval.charAt(i)=='.')
					return false;
			}
			return true;
		}
		else
			return false;
	}
}


function fnrefresh()
{
	window.location.reload();
}

function fnbutdown(obj)
{
	obj.className="butover";
}
function fnbutup(obj)
{
	obj.className="but";
}

function fntoolover(obj)
{
	obj.className="imgtool";
}
function fntoolout(obj)
{
	obj.className="#";
}
function fntooldown(obj)
{
	obj.className="imgtooldown";
}
function fntoolup(obj)
{
	obj.className="imgtool";
}
function checknum1(objName)
	{
		var checkOK = "0123456789.- ";
		var checkStr = objName;
		var allValid = true;
		var decPoints = 0;
		var allNum = "";

		for (i = 0;  i< checkStr.value.length;  i++)
		{
			ch = checkStr.value.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
				if (ch == checkOK.charAt(j))
				break;
			if (j == checkOK.length)
			{
				allValid = false;
				break;
			}
			if (ch != ",")
				allNum += ch;
		}
	   if (!allValid)
		{	
			objName.focus();
			objName.select();
			return (false);
		}
		else
			return (true);
	
	}