function addLoadEvent(func)
{ 
     var oldonload = window.onload;
     if (typeof window.onload != 'function')
     { 
          window.onload = func; 
     } 
     else
     {
         window.onload = function()
         {
            if (oldonload)
             { 
                oldonload();
             } 
             func(); 
         }
     }
}
function addClickEvent(a,i,func)
 {
     if (typeof a[i].onclick != 'function')
       { 
           a[i].onclick = func; 
       } 
}


var theDiv = '<div id="ExitPopup"  style="display:block; width:100%; height:100%; position:absolute;" align="center">';
theDiv = theDiv + '<iframe src="'+Popuppage+'" width="100%" height="100%" align="center" frameborder="0"></iframe>';
theDiv = theDiv + '</div>';

theBody = document.body;
if (!theBody) 
{
      theBody = document.getElementById("body"); 
      if (!theBody) 
      {
         theBody = document.getElementsByTagName("body")[0];
      }
}
var ExitPopup = false;
function Showpopup()
{  
  if(ExitPopup == false)
  { 
     
     window.scrollTo(0,0);  
     ExitPopup=true; 
     divtag = document.createElement("div"); 
     divtag.setAttribute("id","PopupPage");
     divtag.style.position="absolute"; 
     divtag.style.width="100%"; 
     divtag.style.height="100%"; 
     divtag.style.zIndex="99"; 
     divtag.style.left="0px"; 
     divtag.style.top="0px"; 
     divtag.innerHTML=theDiv;
     theBody.innerHTML="";
     theBody.topMargin="0px"; 
     theBody.rightMargin="0px"; 
     theBody.bottomMargin="0px"; 
     theBody.leftMargin="0px"; 
     theBody.style.overflow="hidden";
     theBody.appendChild(divtag); 
     return ConfirmMessage; 
   } 
}


disablelinksfunc = function()
{
  var a = document.getElementsByTagName('A'); 
  for (var i = 0; i < a.length; i++) 
   { 
      if(a[i].target !== '_blank') 
        {
        addClickEvent(a,i, function(){ ExitPopup=true; });
        } 
        else
        {
         addClickEvent(a,i, function(){ ExitPopup=false;});
        }
    }
}
addLoadEvent(disablelinksfunc);
disableformsfunc = function()
{
   var f = document.getElementsByTagName('FORM');
   for (var i=0;i<f.length;i++)
   { 
    if (!f[i].onclick)
     {
       f[i].onclick=function()
        { 
         ExitPopup=true; 
        } 
      }
       else if (!f[i].onsubmit)
       { 
       f[i].onsubmit=function()
          { 
            ExitPopup=true; 
           }
        }
    }
}
addLoadEvent(disableformsfunc);
window.onbeforeunload = Showpopup;