// JavaScript Document
function validation(){
	if(trim(document.getElementById('username').value).length<1)
	{
		alert("Please enter username.");
		document.getElementById('username').focus();
		return false;
	}	
	if(trim(document.getElementById('password').value).length<1)
	{
		alert("Please enter password.");
		document.getElementById('password').focus();
		return false;
	}		
}