wh.js

function getWH(){
        var pageWidth = window.innerWidth,pageHeight = window.innerHeight;

        if(typeof pageWidth != "number"){
           if(document.compatMode == "CSS1Compat"){
               pageWidth = document.documentElement.clientWidth;
               pageHeight = document.documentElement.clientHeight;
           }else{
               pageWidth = document.body.clientWidth;
               pageHeight = document.body.clientHeight;
           }
        };
        return [pageWidth,pageHeight]
};