/////////// FUNCTION LOGIN //////////////

function login(input, response) {


	var username = document.getElementById('username');
	var password = document.getElementById('password');
	
	
 	
if(username.value==''){
   alert('Xin vui lòng điền Username.');
   
 
 } else if(password.value==''){
   alert('Xin vui lòng điền mật mã.');
  
 
 } else {
	
/// MAKE RESPONSE
	
if (response != '')
		{ 
			if (response != 'main'){
			alert("" + response + "");
			
			document.getElementById('loading').style.display = 'none';
			return false;
			} 
			else
			{
			window.location = '';
			}
			
	  	}
		else
		{
			if (input!='')
			{
			
			document.getElementById('loading').style.display = 'block';
			url  = 'index.php?shome=login&op=login&u='+ encodeURI(document.getElementById("username").value) +
                    "&p=" + encodeURI(document.getElementById("password").value) ;
			loadXMLDoc(url);
			}
	  	}
// END MAKE



}


}