var browserName=navigator.appName;
var left_align = 0;  // Set the left position to center the greybox
var top_align = 0;  // Set the top position to center the greybox


function disp(){
   if(browserName == "Netscape"){
      var stop = document.documentElement.scrollTop;  
      document.getElementById('ebox1').style.height=document.body.offsetHeight+"px";
	  document.getElementById('s').style.position = "fixed";
	}else{
	  var stop = window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;
      window.onscroll=mveditbox;
   }
   document.getElementById('s').style.display = 'block'; 
   document.getElementById('ebox1').style.display='block'; 
   
   document.getElementById('frm').style.opacity = 5/10;
   document.getElementById('frm').style.filter = 5/10;

   document.getElementById('ebox1').style.zIndex=100; 
   document.getElementById('s').style.zIndex=1000; 
   document.getElementById('ebox1').style.top=stop+"px";

   var top_pos = stop+top_align;   
   document.getElementById('s').style.top= top_pos+"13%";	

   var sleft = window.pageXOffset || document.body.scrollLeft || document.documentElement.scrollLeft;
   var left_pos = sleft+left_align;
   document.getElementById('s').style.left= left_pos+"13%";
}

function hide(){
   document.getElementById('s').style.display='none';
   document.getElementById('frm').style.opacity = 100;
   document.getElementById('ebox1').style.display='none'; 
}
  
function mveditbox() {
   var stop =window.pageYOffset || document.body.scrollTop || document.documentElement.scrollTop;
   document.getElementById('ebox1').style.top=stop+"px";
   
   var tot = stop+top_align;  
   document.getElementById('s').style.top= tot+"px";	

   document.getElementById('ebox1').style.height = document.body.clientHeight+"px";
}