function checkSize() {
   var myWidth = 0;
   var 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;
         }
      }
   }
   return [ myWidth,myHeight ];
}