function login(obj) 
   {
	  //alert("okkkkkkkkkkk");
      var poststr = "username=" + encodeURI( document.getElementById("username").value ) +
	  				"&password=" + encodeURI( document.getElementById("password").value );
		
					
      makePOSTRequest('login/login.php', poststr);
	  
	  //alert(poststr)
   }
   function makePOSTRequest(url, parameters) 
   {
      
      makeobj();
      http_request.onreadystatechange = alertLoginContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertLoginContents() 
   {
	   if(http_request.readyState != 4) 
	   {
		 /*document.getElementById("status").style.visibility="visible";*/
		}
		
		
      if (http_request.readyState == 4) 
	  {
		 var error = "Unauthorised Access";		  
		 if (document.getElementById("username").value == 0 )
			{
				 document.getElementById('login_error').innerHTML = error;
			}
			
			//.............................
			
	     else if (http_request.status == 200) 
		 {
			 
			var result = http_request.responseText;			
		
			if (result == 1 )
			{            	
				 //window.location = 'admin/profile_view.php';
				 window.location = 'index.php?ut=1'
			}
			else if(result == 2)
			{
				//window.location = 'admin_tool/profile_view.php';
				window.location = 'index.php?ut=2'
			}
			else
			{
				document.getElementById('login_error').innerHTML = result;         	
			}
         }
		
		else 
		 {
            alert('Internal Server Error: Login');
         }
	  }
        
   }