function openYouTube(id){ 
      //YouTube Player Parameters 
      var width = 640; 
      var height = 505; 
      var FullScreen = "yes"; 
      var AutoPlay = "yes"; 
      var HighDef = "yes"; 
      
      //Calculate Page width and height 
      var pageWidth = window.innerWidth; 
      var pageHeight = window.innerHeight; 
      if (typeof pageWidth != "number"){ 
      if (document.compatMode == "CSS1Compat"){ 
            pageWidth = document.documentElement.clientWidth; 
            pageHeight = document.documentElement.clientHeight; 
      } else { 
            pageWidth = document.body.clientWidth; 
            pageHeight = document.body.clientHeight; 
            } 
      } 
      // Make Background visible... 
      var divbg = document.getElementById('bg'); 
      divbg.style.visibility = "visible"; 
      
      //Create dynamic Div container for YouTube Popup Div 
      var divobj = document.createElement('div'); 
      divobj.setAttribute('id',id); // Set id to YouTube id 
      divobj.className = "popup"; 
      divobj.style.visibility = "visible"; 
      var divWidth = width + 4; 
      var divHeight = height + 20; 
      divobj.style.width = divWidth + "px"; 
      divobj.style.height = divHeight + "px"; 
      var divLeft = (pageWidth - divWidth) / 2; 
      var divTop = (pageHeight - divHeight) / 2 - 10; 
      //Set Left and top coordinates for the div tag 
      divobj.style.left = divLeft + "px"; 
      divobj.style.top = divTop + "px"; 
      
      //Create dynamic Close Button Div 
      var closebutton = document.createElement('div'); 
      closebutton.style.visibility = "visible"; 
      closebutton.innerHTML = "<span onclick=\"closeYouTube('" + id +"')\" class=\"close_button\">X</span>"; 
      //Add Close Button Div to YouTube Popup Div container 
      divobj.appendChild(closebutton); 

      //Create dynamic YouTube Div 
      var ytobj = document.createElement('div'); 
      ytobj.setAttribute('id', "yt" + id); 
      ytobj.className = "ytcontainer"; 
      ytobj.style.width = width + "px"; 
      ytobj.style.height = height + "px"; 
      if (FullScreen == "yes") FullScreen="&fs=1"; else FullScreen="&fs=0"; 
      if (AutoPlay == "yes") AutoPlay="&autoplay=1"; else AutoPlay="&autoplay=0"; 
      if (HighDef == "yes") HighDef="&hd=1"; else HighDef="&hd=0"; 
      var URL = "http://www.youtube.com/v/" + id + "&hl=en&rel=0&showsearch=0" + FullScreen + AutoPlay + HighDef; 
      var YouTube = "<object width=\"" + width + "\" height=\"" + height + "\">"; 
      YouTube += "<param name=\"movie\" value=\"" + URL + "\"></param>"; 
      YouTube += "<param name=\"allowFullScreen\" value=\"true\"></param><param name=\"allowscriptaccess\" value=\"always\"></param>"; 
      YouTube += "<embed src=\"" + URL + "\" type=\"application/x-shockwave-flash\" "; 
      YouTube += "allowscriptaccess=\"always\" allowfullscreen=\"true\" width=\"" + width + "\" height=\"" + height + "\"></embed></object>"; 
      ytobj.innerHTML = YouTube; 
      //Add YouTube Div to YouTube Popup Div container 
      divobj.appendChild(ytobj); 
      
      //Add YouTube Popup Div container to HTML BODY 
      document.body.appendChild(divobj); 
} 
function closeYouTube(id){ 
      var divbg = document.getElementById('bg'); 
      divbg.style.visibility = "hidden"; 
      var divobj = document.getElementById(id); 
      var ytobj = document.getElementById("yt" + id); 
      divobj.removeChild(ytobj); //remove YouTube Div 
      document.body.removeChild(divobj); // remove Popup Div 
}