if (navigator.userAgent.indexOf("Mozilla/4.0") != -1) {
	version = 4;
} else if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) {
	version = 3;
} else if (navigator.userAgent.indexOf("Mozilla/2.0") != -1) {
	version = 2;
} else if (navigator.userAgent.indexOf("MSIE") != -1) {
	version = 1;
} else {
	version = 0;
}

var zoomwindow;

function popup (url,width,height) {

	scr_x = screen.width;
	scr_y = screen.height;
	
	if(screen.width > 800){
		newx = (scr_x-600)/2;
		newy = (scr_y-400)/2;
	}
	else {
		newx = (scr_x/2)-200;
		newy = (scr_y/2)-150;
	}
	
	
/* if(!document.all){
	 newx=window.pageXOffset;
	 pageW=window.innerWidth;
	 newy=window.pageYOffset;
	 pageH=window.innerHeight;
 } else {
	 newx=window.document.body.scrollLeft;
	 pageW=window.document.body.offsetWidth-90;
	 newy=window.document.body.scrollTop;
	 pageH=window.document.body.offsetHeight;
 }

	newx = parent.top +150;
	newy = parent.left +150;
*/	
	var features;
	features = "toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=1,resizable=1,fullscreen=0,width=" + width + ",height=" + height + ",top="+newy+",left="+newx+"'";
	if (zoomwindow != null) {
		if (!zoomwindow.closed)
			zoomwindow.close();
	}
	zoomwindow = window.open(url,"ZOOMWINDOW",features);
	if (version == 3 || version == 4) {
		zoomwindow.focus();
	}
}

<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->