function gup(name, url) {
if (!url) url = location.href;
name = name.replace(/[[]/, "\[").replace(/[]]/, "\]");
var regexS = "[\?&]" + name + "=([^&#]*)";
var regex = new RegExp(regexS);
var results = regex.exec(url);
return results == null ? null : results[1];
}
var _width = parseInt(gup("wd"));