function check_form()
{
	if(document.frm.user_name.value=="")
	{
		alert("Please Enter User Name");
		document.frm.user_name.focus();
		return false;
	}
	if(document.frm.user_pass.value=="")
	{
		alert("Please Enter User Password");
		document.frm.user_pass.focus();
		return false;
	}
}