function validateLoginForm(form) {
		
								    if (form.user_name.value == "") {
		  									 alert("Please enter your user name.");
		  									 form.user_name.focus( );
		  									 return false;
		   							}										
								    if (form.password.value == "") {
		 									alert("Please enter your password.");
		  									form.password.focus( );
		   									return false;
		   							}
		   					  							
										
										return true;  
								}