function popup(el,hidechrome,width,height) {
  var html = "";
  var wname = 'popup';
 
  var how_wide = screen.availWidth;
  var how_high = screen.availHeight;
  
  top_pos = (how_high/2) -  (height/2);
  left_pos = (how_wide/2) -  (width/2);
  
  for(var i=0 ;i<el.childNodes.length-1; i++) {
    if(!el.childNodes[i].innerHTML) continue;
    html += el.childNodes[i].innerHTML;
  }
      var option = hidechrome +",Width="+width+",Height="+height+",left="+left_pos+",top="+top_pos;
      
      site=open('about:blank',wname,option);
     
      site.document.open();
      site.document.write(html);
      site.document.close();
     
      if(site.open){site.focus();return false;}
      site.resizeTo(width,height);
      
    
}