// for mac user 
if (navigator.userAgent.indexOf('Mac') != -1) {document.write('<style type=¥"text/css¥">body { font-size:100%; }</style>');}


// IE 6 Clear Sprite Cache
try {
document.execCommand('BackgroundImageCache', false, true);
} catch(e) {}

//Swap Image
function switchImage(imgName, imgSrc) 
{
  if (document.images)
  {
    if (imgSrc != "none")
    {
      document.images[imgName].src = imgSrc;
    }
  }
}

//Popup Window
var popUpWin=0;
function popUpWindow(URLStr,left,top,width,height)
{
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

// IE6
try {
	document.execCommand('BackgroundImageCache', false, true);
} catch(e) {}