var timer;
 if (navigator.appVersion.indexOf("2.") != -1){
	check = false;
	}
if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1)){
	check = false;
	}
else
 {
	check = true;
	}
if (check == true){
	image1 = new Image();
	image1.src = "pics/buttons/sprache_english.gif";
	image1on = new Image();
	image1on.src = "pics/buttons/sprache_english_Red.gif";
	image1alt = new Image();
	image1alt.src = "pics/buttons/sprache_english_Red.gif";
}
Prefab_imagealt = ""
function imageon(name){
	if (Prefab_imagealt != name){
        	document[name].src = eval(name + "on.src");
	}
}
function imageoff(name){
	if (Prefab_imagealt != name){
        	document[name].src = eval(name + ".src");
	}
}
function on(name){
        if (check == true){
	imageon(name);
	}
}
function off(name){
        if (check == true){
	imageoff(name);
	}
}
function alt(name){
	if (check == true){
	document[name].src = eval(name + "alt.src");
	if (Prefab_imagealt != name){
		if (Prefab_imagealt != ""){
			document[Prefab_imagealt].src = eval(Prefab_imagealt + ".src");
		}
	}
	Prefab_imagealt = name
	}
}