var browserName=navigator.appName;
var left_align = 268; // Set the left position to center the greybox
var top_align = 134;  // Set the top position to center the greybox
function disp(){
	var fileName = document.getElementsByName("uploadedfile")[0].value;
	//alert("Files must be in .zip format ".filename);
	//alert(document.getElementsByName("uploadedfile")[0].value);
	var ext = fileName.substr(fileName.lastIndexOf('.') + 1);
	if(ext != 'zip') {
		alert('Files can only be uploaded in .zip format.');
		return false;
	}

	
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+"px";	*/

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

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";
}