var pw;
function winopenGetOpt(opts,key) {
	if (opts) {
		var pre=key+"=";
		var i=opts.substr(0,pre.length)==pre ? 0 : opts.indexOf(","+pre);
		if (i>=0) {
			var j=opts.indexOf(",",i);
			if (j<0)
				j=opts.length;
			return opts.substring(i+key.length+1,j);
		}
	}
}

function popup(url,w,h,opts) {
  if (navigator.userAgent.indexOf('Mobile/') >= 0) { location = url; return; }
  if (!w) w=900;
  if (!h) h=600;
  var sw=800, sh=572;
  if (window.screen) {
    sw=screen.availWidth;
    sh=screen.availHeight - 75;
  }
  sw-=15;
  sh-=50;
  if (w>sw) w=sw;
  if (h>sh) h=sh;
  var t=190;
  var l=sw-w;
  if (l<0) l=0;
  if (t+h>sh) t=sh-h;

  
  var id=winopenGetOpt(opts,"id")||(winopenGetOpt(opts,"newid")?new Date().getTime().toString():("w"+w+"h"+h));
  var f=1;
  var exturl;
  if (url.indexOf("http:")==0){var i=url.indexOf("/", 7); exturl = url.substring(0,i)!=location.href.substring(0,i);}
  if(!exturl)id="pop_"+id;
  if (!window.focus||(exturl&&navigator.userAgent.indexOf("MSIE 4")>=0)) {
    if(pw){
	 pw=window.open('',id,"top=9999,left=9999,width=0,height=0");pw.close();
	 pw=null;setTimeout("popup('"+url+"',"+w+","+h+(opts?",'"+opts+"'":"")+")",1);
	 return;
    }
    f=0
  }
  var parm3="alwaysRaised=1";
  parm3+=",dependent="+(opts&&opts.indexOf("dependent=yes")!=-1?"yes":"no");
  parm3+=",directories="+(opts&&opts.indexOf("directories=yes")!=-1?"yes":"no");
  parm3+=",hotkeys="+(opts&&opts.indexOf("hotkeys=yes")!=-1?"yes":"no");
  parm3+=",width="+w;
  parm3+=",height="+h;
  parm3+=",location="+(opts&&opts.indexOf("location=yes")!=-1?"yes":"no");
  parm3+=",menubar="+(opts&&opts.indexOf("menubar=no")!=-1?"no":"yes"); //ps: 14-11-2003, standaard aangezet
  parm3+=",resizable="+(opts&&opts.indexOf("resizable=no")!=-1?"no":"yes");
  parm3+=",scrollbars="+(opts&&opts.indexOf("scrollbars=no")!=-1?"no":"yes");
  parm3+=",status="+(opts&&opts.indexOf("status=no")!=-1?"no":"yes");
  parm3+=",titlebar="+(opts&&opts.indexOf("titlebar=no")!=-1?"no":"yes");
  parm3+=",toolbar="+(opts&&opts.indexOf("toolbar=yes")!=-1?"yes":"no");
  parm3+=",left="+l;
  parm3+=",top="+t;
  pw=window.open(url,id,parm3);
  if(pw&&pw.focus){var oe=window.onerror;window.onerror=function(){return false};if(window.event)window.event.returnValue=false;pw.focus();window.onerror=oe}
  return pw;
}