function LTrim(str) 

{ 

	 for (var k=0; k<str.length && str.charAt(k)<=" " ; k++) ;

	 return str.substring(k,str.length);

}

function RTrim(str) 

{

	 for (var j=str.length-1; j>=0 && str.charAt(j)<=" " ; j--) ;

	 return str.substring(0,j+1);

}

function Trim(str) 

{

	 return LTrim(RTrim(str));

}





/////////////// For Empy Fields Validation ///////////////////

function isEmpty(thisfield, msg)

{

	if (Trim(thisfield.value) == "")

	{

		alert(msg);

		thisfield.focus();

		return false;

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For Zip Code Validation ////////////////////

function isZipCode(thisfield)

{

	field = thisfield.value;

	var valid = "0123456789-";

	var hyphencount = 0;

	

	if (field.length!=5 && field.length!=10)

	{

		alert("Please enter correct zip code.");

		thisfield.focus();

		return false;

	}

	

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

	{

		temp = "" + field.substring(i, i+1);

		if (temp == "-") hyphencount++;

		

		if (valid.indexOf(temp) == "-1")

		{

			alert("Invalid characters in your zip code. Please try again.");

			thisfield.focus();

			return false;

		}

		if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-"))

		{

			alert("The hyphen character should be used with a properly formatted zip code, like '12345-6789'. Please try again.");

			thisfield.focus();

			return false;

	   }

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For Number Validation ////////////////////

function isNumber(thisfield, msg)

{

	if(isNaN(Trim(thisfield.value))) 

	{

		alert(msg);

		thisfield.focus();

		return false;

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For Email Validation ////////////////////

function isEmail(thisfield)

{	

	if (Trim(thisfield.value) != "")

	{

		var str=thisfield.value;

		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i

		if (filter.test(str))

		testresults=true

		else

		{

			alert("A valid email address is required")

			thisfield.focus();

			return false;

		}		

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For URL Validation ////////////////////

function isURL(thisfield)

{	

	if (Trim(thisfield.value) != "")

	{

		/*

		var str=thisfield.value;

		//var filter=/^(http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([0-9A-Za-z]+\.)/i

		//var filter=^(?#http)(?:(?:ht|f)tp(?:s?)\:\/\/|~/|/)?(?#Username:Password)(?:\w+:\w+@)?(?#Subdomains)(?:(?:[-\w]+\.)+(?#TopLevel Domains)(?:com|org|net|gov|mil|biz|info|mobi|name|aero|jobs|museum|travel|[a-z]{2}))(?#Port)(?::[\d]{1,5})?(?#Directories)(?:(?:(?:/(?:[-\w~!$+|.,=]|%[a-f\d]{2})+)+|/)+|\?|#)?(?#Query)(?:(?:\?(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)(?:&(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)*)*(?#Anchor)(?:#(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)?$

		

		if (filter.test(str))

		testresults=true

		else

		{

			alert("Please enter valid URL")

			thisfield.focus();

			return false;

		}

		*/

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For Match Password ////////////////////

function isEmptyUsername(thisfield)

{

	if (Trim(thisfield.value) == "" || thisfield.value.length < 6)

	{

		alert ("Username is required with minimum 6 characters");

		thisfield.focus();

		return false;

	}

	

	return true;

}



/////////////////////////////////////////////////////////////



//////////////// For Match Password ////////////////////

function isEmptyPassword(thisfield)

{

	if (Trim(thisfield.value) == "" || thisfield.value.length < 6)

	{

		alert ("Password is required with minimum 6 characters");

		thisfield.focus();

		return false;

	}

	

	return true;

}



function matchPassword(thisfield1, thisfield2)

{	

	if (Trim(thisfield1.value) == "" || thisfield1.value.length < 6)

	{

		alert ("Password is required with minimum 6 characters");

		thisfield1.focus();

		return false;

	}

	if (Trim(thisfield2.value) == "" || thisfield2.value.length < 6)

	{

		alert ("Confirm password is required with minimum 6 characters");

		thisfield2.focus();

		return false;

	}

	

	if (thisfield1.value != thisfield2.value)

	{

		alert ("Password is not confirmed");

		thisfield1.focus();

		return false;

	}

	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For Match Email Address ////////////////////

function matchEmail(thisfield1, thisfield2)

{

	if (Trim(thisfield1.value) != Trim(thisfield2.value))

	{

		alert ("Email address is not confirmed, please enter correct email address");

		thisfield1.focus();

		return false;

	}

	

	return true;

}

/////////////////////////////////////////////////////////////





////////////////// For Date Validation //////////////////////



// 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)

	{

		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 checkDate(dt)

{	

	if (isDate(dt.value)==false)

	{

		dt.focus()

		return false

	}

    return true

 }

 

/////////////////////////////////////////////////////////////



//////////////// For URL Validation ////////////////////

function fileType(thisfield, types, msg)

{	

	if (Trim(thisfield.value) != "")

	{

		var str=thisfield.value;

		var ext = str.substring(str.indexOf(".") , str.length ); // get the file Extension

		

		var typeArray = types.split(", ");		

		

		var error="1";

		for(i = 0; i < typeArray.length; i++)

		{

			var currType = typeArray[i];

			

			if(ext == currType)

			{

				error = 0;

			}

		}	

		

		if(error.length > 0)

		{

			alert (msg);

			thisfield.focus();

			return false;

		}

		

		return true;

	}	

	return true;

}

/////////////////////////////////////////////////////////////



//////////////// For popup ////////////////////

function popup(URL, width, height, left, top)

{

	OpenWin = this.open(URL, "popup", "toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=no,width="+width+",height="+height+",left="+left+",top="+top+"");

}



//////////////// For Text ////////////////////

function limitText(limitField, limitCount, limitNum)

{

	limitCount = document.getElementById(limitCount);

	if (limitField.value.length > limitNum)

	{

		limitField.value = limitField.value.substring(0, limitNum);

	}

	else

	{

		limitCount.innerHTML = limitNum - limitField.value.length;

	}

}