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function changeImage(imgName,imgSrc)
{document.images[imgName].src=imgSrc;}
function preloadImages(){var d=document;if(d.images){if(!d.p)d.p=new Array();var i,j=d.p.length,a=preloadImages.arguments;for(i=0;i<a.length;i++)
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function popUp(url,width,height,scrolls)
{winOptions="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars="+scrolls+",resizable=no,copyhistory=no,width="+width+",height="+height+",screenX=20,screenY=20";var win=window.open(url,'Help',winOptions);if(!win.opener)win.opener=self;if(win.focus)win.focus();}