var docEle = function(obj){return document.getElementById(obj) || false;}
function InitDiv(){var m="mask";if (docEle(m)) {document.body.removeChild(document.getElementById(m));}var newMask = document.createElement("div");newMask.id = m;newMask.style.position = "absolute";
newMask.style.zIndex = "200";
if(navigator.appVersion.match(/7./i)=='7.') 
{
newMask.style.width ="100%";
}
else
{
    newMask.style.width= parseInt(document.body.clientWidth,10)+"px";
}
var ph = document.body.clientHeight;
var sh = window.screen.height;if(ph <= sh) {newMask.style.height = sh + "px";} else {newMask.style.height = ph + "px";}newMask.style.top = "0px";newMask.style.left = "0px";newMask.style.background = "#000";newMask.style.filter = "alpha(opacity=40)";newMask.style.opacity = "0.40";document.body.appendChild(newMask);return 1};

   function CloseDiv(ggg)
   {
        if(ggg==null)
            ggg="mask";
        if (docEle(ggg)) 
        {
          document.body.removeChild(document.getElementById(ggg));
        }
        return false;
   }