//SETTING UP OUR POPUP  
//0 means disabled; 1 means enabled;  
var popupStatus = 0;

//loading popup with jQuery magic!  
function loadPopup() {
   //loads popup only if it is disabled  
   if (popupStatus == 0) {
      $("#backgroundPopup").css({
         "opacity": "0.7"
      });
      $("#backgroundPopup").fadeIn("slow");
      $("#popupContact").fadeIn("slow");
      popupStatus = 1;
   }
}
//disabling popup with jQuery magic!  
function disablePopup() {  
   //disables popup only if it is enabled  
   if(popupStatus==1){  
      $("#backgroundPopup").fadeOut("slow");  
      $("#popupContact").fadeOut("slow");  
      popupStatus = 0;  
   }  
}  
//centering popup  
function centerPopup() {  
//request data for centering  
   var windowWidth = document.documentElement.clientWidth;  
   var windowHeight = document.documentElement.clientHeight;  
   var popupHeight = $("#popupContact").height();  
   var popupWidth = $("#popupContact").width();  
   //centering  
   $("#popupContact").css({  
     "position": "absolute",  
     "top": 230,  
     "left": windowWidth/2-popupWidth/2  
  });  
  //only need force for IE6  
  $("#backgroundPopup").css({  
     "height": windowHeight  
  });  
}  

$(document).ready(function(){  
   $("#popupContactClose").click(function(){  
      disablePopup();  
   });  
   $("#backgroundPopup").click(function(){  
      disablePopup();  
   });  
   $(document).keypress(function(e){  
      if(e.keyCode==27 && popupStatus==1) {  
         disablePopup();  
      }  
   });    
   centerPopup();  
   loadPopup();  
});