function open_popup(url, w, h, resize, scroll,wname) {
/* place this in onclick or href:  "javascript:open_popup('[url]','[width of window]','[height of window]','[resize option]','[scroll opiton]','[windowname]');"  */
  wname = (wname == null) ? "popwin" : wname.replace(new RegExp(/ /g), "");
  
  scroll = ((scroll == null)||(scroll=='')||(scroll==1)||(scroll=='1'))? 'yes':'no';
  resize = ((resize == null)||(resize=='')||(resize==1)||(resize=='1'))? 'yes':'no';
  var properties = "toolbar=0,scrollbars="+scroll+",location=0,statusbar=1,menubar=0,resizable="+resize;
  properties += ",width="+ w +",height="+ h;
  child = window.open(url,wname,properties);
  child.focus();
}