var IE = false;
var IE7 = false;

onload = function () {
	//alert (navigator.appVersion);
	if (navigator.appVersion.search("MSIE 7")!=-1) {
		//alert ("IE 7");	
		IE = false;
		IE7 = true;
	} else {
		// kleiner als IE 7
		if (navigator.appName.search("Explorer")!=-1 && parseFloat(navigator.appVersion) < 4.1) {
			//alert (parseFloat(navigator.appVersion));
			IE = true;
			IE7 = false;
		} 
	}
}