function show_login(x) {
		document.getElementById('block1').style.display='none';
		document.getElementById('block2').style.display='none';
		document.getElementById('block3').style.display='none';
		document.getElementById('block4').style.display='none';
		document.getElementById('block'+x).style.display='block';
		if (x==0) {
			document.getElementById('block1').style.display='block';
		}
}

function submit_login()
{

          new Ajax.Request('index.php?mode=login', 
          {
            parameters: $('loginform').serialize(),
            onSuccess: function(transport)
            {

               if(transport.responseText!="")
               {

                   if(transport.responseText=="ok")
                   {

                      document.location.href = "index.php?clientreview";

                   } else {

                        show_login(4);

                     }

               } else { show_error_msg(1); }

            },
            onFailure: function(){show_error_msg(1);}
          }
        
         );

}

function show_help()
{

          new Ajax.Request('index.php?mode=help', 
          {
            parameters: $('helpform').serialize(),
            onSuccess: function(transport)
            {

               if(transport.responseText!="")
               {

                      show_login(3);

               } else { show_error_msg(1); }

            },
            onFailure: function(){show_error_msg(1);}
          }
        
         );

}

function show_error_msg(num)
{
   alert("Server connection lost");
}