function ValidatorTrim(s)
{
    var m = s.match(/^\s*(\S+(\s+\S+)*)\s*$/);
    return (m == null) ? "" : m[1];
}

function checkEmail(strng)
{
	var error = "";
	if (strng == "")
		{
		error = "You did not enter an email-address.\n";
		}
	var emailFilter=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
	if (!(emailFilter.test(strng))) 
		{ 
		error = "Please enter a valid email address.\n";
		}
	var illegalChars= /[\(\)\<\>\,\;\:\\\/\"\[\]]/;
	if(strng.match(illegalChars))
		{
		error = "The email address contains illegal characters.\n";
		}
	return error;
}

function checkalphanumeric(alphane)
{
	var str = alphane;
	for(var j=0; j<str.length; j++)
	{
		var alphaa = str.charAt(j);
		var chrcode = alphaa.charCodeAt(0);
		if((chrcode > 47 && chrcode<59) || (chrcode > 64 && chrcode<91) || (chrcode > 96 && chrcode<123) || chrcode==95)
		{
		}
		else
		{
			return false;
		}
	}
	return true;
}
function checkNumeric(strng,errmsgfield) {
	var error = "";
	var illegalChars = /\D/;
	if (illegalChars.test(strng)) {
	   	error = errmsgfield+" is invalid.\n";
	}
	return error;
}
function checkspecialchar(alphane)
{
	var str = alphane;
	for(var j=0; j<str.length; j++)
	{
		var alphaa = str.charAt(j);
		var chrcode = alphaa.charCodeAt(0);
		if((chrcode > 47 && chrcode<59) || (chrcode > 64 && chrcode<91) || (chrcode > 96 && chrcode<123) || chrcode==95)
		{
		}
		else
		{
			return false;
		}
	}
	return true;
}

function checkEmailAddress(emailval) 
{
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(emailval)){ return true; }
	return false;
}