function ValidateBlankField(lsFieldValue,strDisplay)
{
	var lsBlankFlag=0;
	for(i=0; i< lsFieldValue.length;i++)
	 {	if(lsFieldValue.charAt(i) !=" ")
	 	{
	 		lsBlankFlag =1;
	 		return 1;
	 	}
	 }
	 if(lsBlankFlag== 0)
	 {	
		if (strDisplay!='')
			alert(strDisplay);
	 	return 0;
	 }
}

function Validate_AlphaNumericField(lsFieldValue,strDisplay)
{
	var checkOK = "_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.`!@&*$?/\{}()[]+=<>:;,- '";
	var allValid = 1;
	var lsBlankFlag=0;
	for (i = 0;  i < lsFieldValue.length;  i++)
	{
		ch = lsFieldValue.charAt(i);
		for (j = 0;  j < checkOK.length;  j++)
			{
			if (ch == checkOK.charAt(j))
				break;
			}
		if (j == checkOK.length)
		{
			allValid = 0;
			break;
		}
	}
	 if(allValid == 0)
	 {	
		alert(strDisplay);
		return 0;
	 }
	 else
	 {
		return 1;
	 }
}

function Email_CheckAllowable(lsFieldValue,strDisplay)
{
	var checkOK = "_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.@-";
	var allValid = 1;
	var lsBlankFlag=0;
	for (i = 0;  i < lsFieldValue.length;  i++)
	{
		ch = lsFieldValue.charAt(i);
		for (j = 0;  j < checkOK.length;  j++)
			{
			if (ch == checkOK.charAt(j))
				break;
			}
		if (j == checkOK.length)
		{
			allValid = 0;
			break;
		}
	}
	 if(allValid == 0)
	 {	
		alert(strDisplay);
		return 0;
	 }
	 else
	 {
		return 1;
	 }
}

function echeck(str) 
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert("Please enter a Valid Email address. Thank You.")
	   return false;
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Please enter a Valid Email address. Thank You.")
	   return false;
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Please enter a Valid Email address. Thank You.")
		return false;
	}
	 if (str.indexOf(at,(lat+1))!=-1){
		alert("Please enter a Valid Email address. Thank You.")
		return false;
	 }
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Please enter a Valid Email address. Thank You.")
		return false;
	 }
	 if (str.indexOf(dot,(lat+2))==-1){
		alert("Please enter a Valid Email address. Thank You.")
		return false;
	 }		
	 if (str.indexOf(" ")!=-1){
		alert("Please enter a Valid Email address. Thank You.")
		return false;
	 }
	 if (Email_CheckAllowable(str,'Invalid characters found in the email address.')==0)		
		return false;	
}