function openwindow(url) {
// var winwidth = screen.availWidth;
// var winheight = screen.availHeight;
   var winwidth = 350;
   var winheight = 370;

	if (document.all) {
		var sizer = window.open("","",'left=0,top=0,width='+winwidth+',height='+winheight+',scrollbars=auto');
		sizer.location = url;
	} else {
		window.open(url,'fotowindow','width='+winwidth+',height='+winheight+',menubar=no,status=no,location=no,scrollbars=auto,directories=no,resizable=yes');
	}
}
											
if( navigator.appName == "Microsoft Internet Explorer" || navigator.appName == "Netscape" ) {
  navRoot = document.getElementById("menu-nav");
  for (var i=0; i<navRoot.childNodes.length; i++) 
  {
    node = navRoot.childNodes[i];
    if (node.nodeName != "LI")
      continue;
    node.onmouseover=function() {
        this.className+=" over";
    }    
    node.onmouseout=function() {
      this.className=this.className.replace (" over", "");
    }
  }
}