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function getCurrentWidth(){
 var currentWidth = 0;
 // handle IE 6
 if ($.browser.msie && $.browser.version < 7) {
  var scrollWidth = Math.max(
   document.documentElement.scrollWidth,
   document.body.scrollWidth
  );
  var offsetWidth = Math.max(
   document.documentElement.offsetWidth,
   document.body.offsetWidth
  );
  if (scrollWidth < offsetWidth) {
   currentWidth = $(window).width();
  } else {
   currentWidth =  scrollWidth;
  }
 // handle "good" browsers
 } else {
  currentWidth = $(document).width();
 }
 return currentWidth;
}
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function getCurrentHeight(){
 var currentHeight = 0;
 // handle IE 6
 if ($.browser.msie && $.browser.version < 7) {
  var scrollHeight = Math.max(
   document.documentElement.scrollHeight,
   document.body.scrollHeight
  );
  var offsetHeight = Math.max(
   document.documentElement.offsetHeight,
   document.body.offsetHeight
  );
  if (scrollHeight < offsetHeight) {
   currentHeight = $(window).height();
  } else {
   currentHeight = scrollHeight;
  }
 // handle "good" browsers
 } else {
  currentHeight = $(document).height();
 }
 currentHeight = $(window).height();
 return currentHeight;
}