//Define Browser
var isNetsc=((navigator.appName == "Netscape")&&(navigator.userAgent.indexOf("Gecko")!=-1))
//*****************************************************************
function isEmpty(str)
{
	if (str=="") return true;
	for (var i=0; i<str.length; i++)
	{
		var ch=str.substring(i,i+1);
		if (ch!=" ") return false;
	}
	return true;
}
function isEqual(str1,str2)
{
	if (str1 == str2)return true;
	return false;
}

function isAlphaNumeric(ch)
{	
	if (ch.length!=1) return false;
	if ((ch>="a" && ch<="z")||(ch>="A" && ch<="Z") || (ch>="0" && ch<="9"))  
		return true ;
	else 												
		return false;
}
function isInteger(str)
{
	if (isEmpty(str)) return false;
	for (var i=0; i<str.length; i++)
	{
		var ch=str.substring(i,i+1);
		if (ch<"0" || ch > "9" ) return false;
	}
	return true;
}
function isNumber(str)
{
	if (isEmpty(str)) return false;
	var j=0;
	for (var i=0; i<str.length; i++)
	{
		var ch=str.substring(i,i+1);
		if ((ch<"0" && ch !=".") || (ch > "9" && ch !=".")) return false;
		if (ch=='.') j++;
	}
	if (j>1) return false;
	return true;
}

function isPositiveInteger(str)
{
	if(!isInteger(str)) return false;
	if (eval(str)<=0) return false;
	return true;
}
function warning(txtObj,msg)
{
	alert(msg);
	txtObj.select();
	txtObj.focus();
}
function isMMDDYYYY1(str)
{
	if (str=="") return false;
	if (str.substring(2,3)!="/") return false;
	if (str.substring(5,6)!="/") return false;
	for (var i=0; i<str.length; i++)
	{
		var ch=str.substring(i,i+1);
		if ((ch<"0" && ch !="/") || (ch > "9" && ch !="/")) return false;		
	}
	return true;	
}
function isMMDDYYYY(str)
{
	var d=0;
	var m=0;
	var y=0;
	var m1=0;
	var d1=0;
	var dd="";
	var mm="";
	var yyyy="";
	for (var i=0;i<str.length;i++)
	{
		if (str.substring(i,i+1)=="/" && d==0 && m==0)
			{
				dd=str.substring(0,i);
				d=1;
				d1=i;
				//alert(d1);
				continue;
			}
		if (str.substring(i,i+1)=="/" && d==1 && m==0)
			{
				mm=str.substring(d1+1,i);
				m=1;
				m1=i;
				//alert(m1)
			}
	}
		yyyy=str.substring(m1+1,str.length+1);
		//alert(dd);
		//alert(mm)
		//alert(yyyy)
		if (dd.length>2) return false
		if (mm.length>2) return false
		if (!(yyyy.length==4 || yyyy.length==2)) return false
		for (var i=0; i<dd.length; i++)
		{
			var ch=dd.substring(i,i+1);
			if (ch<"0"  || ch > "9") return false;		
		}
		for (var i=0; i<mm.length; i++)
		{
			var ch=mm.substring(i,i+1);
			if (ch<"0"  || ch > "9") return false;		
		}
		for (var i=0; i<yyyy.length; i++)
		{
			var ch=yyyy.substring(i,i+1);
			if (ch<"0"  || ch > "9") return false;		
		}
return true;		
}
function isHHMM(strTime)
{ //'Check length of string, must be 8 characters long:
            if (strTime.length !=8)      
            {
                if (strTime.length == 7) strTime = "0" + strTime;
                else  return false;
            }
            //'Check hours, must be between 0 and 12:
            intTemp = parseInt( strTime.slice(0,2));
            if (intTemp < 0 || intTemp > 12) return false;
            //'Check that colon is in space 3:
            if (strTime.charAt(2) != ':') return false;
            //'Check minutes, must be between 0 and 59:
            intTemp = parseInt( strTime.slice(3,5) );
            if (intTemp < 0 || intTemp > 59) return false;
            //'Check that final 2 chars are am or pm:
            if (!(strTime.slice(6,8).toUpperCase() == 'AM'||strTime.slice(6,8).toUpperCase() == 'PM'))
				return false
	return true	 
}
function isEmail(str)
{	
	if (isEmpty(str)) return false;
	var signCount=0;
	var signDot=0;
	var chAfterSignCount="";
	
	for (var i=0;i<str.length;i++)
	{	
		var ch=str.substring(i,i+1);
		if (i==0 && !isAlphaNumeric(ch)) 
		{
			alert(ch)
			alert(isAlphaNumeric(ch))
			return false;
		}
		if (ch=="@")
		{
			signCount++;
			var ch1=str.substring(i+1,i+2);
			if (!isAlphaNumeric(ch1)) return false;
		}
		if (ch==".")
		{
			signDot++;
			var ch1=str.substring(i+1,i+2);
			if (!isAlphaNumeric(ch1)) return false;
		}
	}
	if (signCount!=1) return false
	if (signDot<1) return false
return true;
}

function isPhoneNumber(area,part1,part2,ext)
{
	if(area.length!=3 || part1.length!=3 || part2.length!=4)
		return false;
	if(!isInteger(area) || !isInteger(part1) || !isInteger(part2))
		return false;
	if(ext!="" && !isInteger(ext))
		return false;
	
return true;
}

function isExpired(month,year)
{
	if(!isInteger(month) || !isInteger(year))
		return true;
	today=new Date();
	theDate=new Date(year,month,01)
	if(today>=theDate) return true;
	
return false;
}
/***********************************************************************/
//New Date validation
function date_validate(mm,dd,yyyy)
{
var chk=true;
var maxDay=0;
// calling function to get maximum day for this month
maxDay = max_day(mm, yyyy);  

if(dd <= 0 || dd > maxDay) chk = false;
else if(mm <= 0 || mm > 12)  chk = false;
else if(yyyy <= 0)  chk = false; 

return chk;
}
 
function max_day(mn, yr)
{
var mDay;
	if(mn == 4 || mn == 6 || mn == 9 || mn == 11) mDay = 30;
	else if(mn == 2) {mDay = isLeapYear(yr) ? 29 : 28;}    
	else mDay = 31;
return mDay; 
}

function isLeapYear(yr)
{
if (yr % 4 != 0)  return false;
else if (yr % 400 == 0)  return true;
else if (yr % 100 == 0)  return false;
else  return true;
}