function isValidEmail(t)
{
		
	return  t.match(/\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/);
}
function isValidAlphaNum(t)
{
		
	return t.match(/\W/);
}

function isValidUrl(t)
{
	return t.match(/^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i)
}
function isValidAlpha(t)
{
	return !t.match(/^[a-zA-Z]+$/)
}

function addClassName(e,t) {
	if (typeof e == "string") {
		e = xGetElementById(e);
	}
	//code to change and replace strings
	var ec = ' ' + e.className.replace(/^\s*|\s*$/g,'') + ' ';
	var nc = ec;
	t = t.replace(/^\s*|\s*$/g,'');
	//check if not already there
	if (ec.indexOf(' '+t+' ') == -1) {
		//not found, add it
		nc = ec + t;
	}
	//return the changed text!
	e.className = nc.replace(/^\s*|\s*$/g,''); //trimmed whitespace
	return true;
}
 
function removeClassName(e,t) {
	if (typeof e == "string") {
		e = xGetElementById(e);
	}
	//code to change and replace strings
	var ec = ' ' + e.className.replace(/^\s*|\s*$/g,'') + ' ';
	var nc = ec;
	t = t.replace(/^\s*|\s*$/g,'');
	//check if not already there
	if (ec.indexOf(' '+t+' ') != -1) {
		//found, so lets remove it
		nc = ec.replace(' ' + t.replace(/^\s*|\s*$/g,'') + ' ',' ');
	}
	//return the changed text!
	e.className = nc.replace(/^\s*|\s*$/g,''); //trimmed whitespace
	return true;
}