function SwapImage(ImageName,ImageFile){
	Image1=new Image();
	Image1.src = ImageFile;
	document[ImageName].src = Image1.src; return true;
}

function openWindow(url, windowname, width, height) {
	option = 'resizable=yes,scrollbars,menubar=no,locationbar=no,width='+width+',height='+height;
	popupWin = window.open(url, windowname, option);
}