function browsercheck() {
	appname= navigator.appName;
		appversion = navigator.appVersion;
		majorver = appversion.substring(0, 1); 
		if ( (appname == "Netscape") && ( majorver >= 3 ) ) return 1;
		if ( (appname == "Microsoft Internet Explorer") && (majorver >= 4) ) return 1;
        return 0;
	}

var img = new Array()
if (browsercheck()) {

	for(i=0;i<10;i++) {

		img[i]=new Image()

		}

img[0].src="data/menu_off_01.gif"
img[1].src="data/menu_01.gif"

img[2].src="data/menu_off_03.gif"
img[3].src="data/menu_03.gif"

img[4].src="data/menu_off_05.gif"
img[5].src="data/menu_05.gif"

img[6].src="data/menu_off_07.gif"
img[7].src="data/menu_07.gif"

img[8].src="data/nach_oben_off_05.gif"
img[9].src="data/nach_oben_05.gif"


}
//--------------------------------

function roll(No,No2) {

	if (browsercheck()) {
			eval("document."+No+".src = img["+No2+"].src")
		}
	}