function winshow(){
    $("#background").fadeIn("slow", function(){
      $("#dialog").css("display", "block");

      var dialog_data = $.ajax({
            url: "/sitewanted.php",
            global: false,
            dataType: "html",
            async:false,
         }
      ).responseText;
      
      $("#dialog").html(dialog_data);

      var height=$("#dialog").height();
      height=-(height/2);
      $("#dialog").css("margin-top", height);
    });
  };

function winclose(){
    $("#background").fadeOut("slow", function(){
      $("#dialog").css("display", "none");
    });
  };

$(document).ready(function(){

  $("#modal_form").click(function(){
winshow();
  });

  $("#background").click(function(){
winclose();
  });

});