var myWidth = 0, myHeight = 0;
                  if( typeof( window.innerWidth ) == 'number' ) {
                    //Non-IE
                    myWidth = window.innerWidth;
                    myHeight = window.innerHeight;
                  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
                    //IE 6+ in 'standards compliant mode'
                    myWidth = document.documentElement.clientWidth;
                    myHeight = document.documentElement.clientHeight;
                  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
                    //IE 4 compatible
                    myWidth = document.body.clientWidth;
                    myHeight = document.body.clientHeight;
                  }