//frmelement.trim()
//isNumAlpha(data)  -->  Alpha Numeric
//isAlpha(data)		-->  Pure Alphabet
//isNumber(data)	-->	 Pure Number
//isPhoneFax(data)	-->	 Phone No & Fax No.		
//isCurrency(data)	-->	 Currency
//isIcNo(data)		-->	 IC Number
//isTime(data)		-->	 Time
//isPassport(data)	-->  Is Valid Passport Number
//isDate(dd,mm,yy)	-->	 Is Valid Date
//isWebsite(data)	-->	 Is Valid Website
//isEmail(data)		-->  Is Valid Email
//isFileImage(date) -->  Is Valid Image file
//acceptNum(event,obj)    -->  Accepct Numerics only at OnKeyUp event, but accepts special characters
//acceptAlpha(event,obj)  -->  Accepct Alphabets only at OnKeyUp event, but accepts special characters

function ss(){
	return this.replace(/^\s+/,'').replace(/\s+$/,'');
}
String.prototype.trim=ss;

function isNumAlpha(data){
	var numStr="=\~!@#$%^*()_+|?><:;{},` "; //- and & are removed .
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isAlpha(data){
	var numStr="1234567890-=\~!@#$%^&*()_+|?><:{},`;";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isNumber(data)
{
	var numStr="1234567890.";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)!=-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isPhoneFax(data)
{
	var numStr="1234567890-,";
	var thisChar;
	var counter=0;
	if (data.length<6) return false;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)!=-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isCurrency(data)
{
	var numStr="1234567890.";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)!=-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}

function isIcNo(data)
{
	var numStr="-=\~!@#$%^&*()_+|?><:{},'`";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isTime(data)
{
	var numStr="0123456789:";
	var thisChar;
	var counter=0;
	for(var i=0; i <data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)>=0)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}
function isPassport(data)
{
	var numStr="-=\~!@#$%^&*()_+|?><:{},'`";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
		
	/*var charstr="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	var numstr="0123456789 ";
	var thisChar;
	var numcnt=0;
	var charcnt=0;
	for(var i=0; i < data.length; i++){
			thisChar=data.substring(i,i+1);
			if(numstr.indexOf(thisChar)>=0)
				numcnt++;
			if(charstr.indexOf(thisChar)>=0)
				charcnt++;
			//alert(thisChar + ' '+ numcnt+' '+charcnt);
	}
	if(charcnt>0 && numcnt>0 && (numcnt+charcnt)==data.length)
		return true;
	else
		return false;
	*/
}
//
function isDate(dd,mm,yy){
	var dat= new Date(yy + '/' + mm + '/' + dd );
	if (dat.getMonth()+1 != mm || dat.getDate()!=dd || dat.getFullYear()!= yy){
		return false;
	}else{
		return true;
	}
}

function isWebsite(data){
www=data.indexOf('www')
http=data.indexOf("http://")
dot=data.indexOf('.')
	if (data.length<15)
		return false;
	if ((www==-1) || (http==-1) || (dot==-1) )
		return false;
	return true;
}
//IsWebsite ends

//Email chk
function isEmail(data){
mail1=data;
at=mail1.indexOf('@');
dot=mail1.indexOf('.');
	if (mail1.length<7)	return false;
	if ((at==-1) || (dot==-1) || (dot==(at+1)))	return false;
return true;
}
//End of E-mail

//isFileImage
function isFileImage(data){
		var dot=data.indexOf('.');
		var gif=data.toUpperCase().indexOf('.GIF');
		var jpg=data.toUpperCase().indexOf('.JPEG');
		var jpeg=data.toUpperCase().indexOf('.JPG');
		if(dot==-1){
			alert("Select Proper Image Type\n[GIF/JPeg/JPG only Allowed]");
			return false;
		}
		if (gif>0 || jpg>0 || jpeg>0){}
		else{
			alert("Select Proper Image Type\n[GIF/JPeg/JPG only Allowed]");
			return false;
		}
	return true;
}
//End isFileImage
//For accepting numeric only at the KEYUP event
function acceptNum(e,obj){
	var waste="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	if (e.keyCode){
		//alert(String.fromCharCode(e.keyCode)+' '+waste.indexOf(String.fromCharCode(e.keyCode)));
		if (waste.indexOf(String.fromCharCode(e.keyCode))>=0){
			var val=(obj.value).substring(0,obj.value.trim().length-1);
			obj.value=val;
		}
	}
}
//end
//For accepting Alpahbets only at the KEYUP event
function acceptAlpha(e,obj){
	var waste="0123456789";
	if (e.keyCode){
		//alert(String.fromCharCode(e.keyCode)+' '+waste.indexOf(String.fromCharCode(e.keyCode)));
		if (waste.indexOf(String.fromCharCode(e.keyCode))>=0){
			var val=(obj.value).substring(0,obj.value.trim().length-1);
			obj.value=val;
		}
	}
}

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 isValidDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=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 : dd/mm/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
}
//ends