function imagezoom(w,h,url) {
    var Fensteroptionen = "toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0";
    var popupWindow = window.open(url, 'Imagezoom', Fensteroptionen + ',width=' + w + ',height=' + h);
    var focus = popupWindow.focus();
}

var height_browser;
var width_browser;
// alle außer IE
if (self.innerHeight)
{
    height_browser = self.innerHeight;
    width_browser = self.innerWidth;
}
// IE 6 strict Mode
else if (document.documentElement && document.documentElement.clientHeight)
{
    height_browser = document.documentElement.clientHeight;
    width_browser = document.documentElement.clientWidth;
}
// andere IE
else if (document.body)
{
    height_browser = document.body.clientHeight;
    width_browser = document.body.clientWidth;
}
var height_gmap = height_browser-70;
var width_gmap = width_browser-70;