// JavaScript Document
var popupStatus = 0;  
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;  
   }  
}  

 function disablePopup(){  
 //disables popup only if it is enabled  
   if(popupStatus==1){  
       $("#backgroundPopup").fadeOut("slow");  
       $("#popupContact").fadeOut("slow");  
       popupStatus = 0;  
   }  
 }  

 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": windowHeight-popupHeight/2,  
    "left": windowWidth/2-popupWidth/2  
  });  
 //only need force for IE6  
   
$("#backgroundPopup").css({  
     "height": windowHeight  
 });  
   
 }