function trim(s)
{
   	var temp = s;
   	return temp.replace(/^\s+/,'').replace(/\s+$/,'');
}
function form_validation()
{	
	var uname	=	trim(document.getElementById('uname').value);
	var pass		=	trim(document.getElementById('pass').value);
	if(uname=="" && pass=="" )
	{
		document.getElementById('validation_comment').innerHTML="Enter Username and Password";
		return false;
	}
	return true;
}