var winie = (navigator.appVersion.toLowerCase().indexOf("msie") != -1 && navigator.appVersion.toLowerCase().indexOf("windows") != -1) ? true : false;
if (winie){
	var ieversion = navigator.appVersion.toLowerCase().match(/msie (\d)/);
		ieversion = RegExp.$1;
	if (ieversion == 6) { document.execCommand("BackgroundImageCache", false, true);}
	}

function chg(e, f) { e.src = f;}