function checkform()
{

	
			
		if(document.ajaxform.txtusername.value=="")
			{
				alert("The user name is empty. ");
				return false;
			}
		if(document.ajaxform.txtuserpass.value=="")
			{
				alert("The password is empty. ");
				return false;
			}
	
	
				
	
	//changeaction();
	//return true;
}