function alleSelektieren(welches) {
	var sel=-1;
	for(var i=0; i < document.suche.elements.length; i++) {
		var e = document.suche.elements[i];
		if ((e.name != 'all') && (e.type == 'checkbox')){
			var dername=e.name;
			var position=dername.indexOf("_");
			if (welches==dername.substr(0,position)) {
				if (sel==-1) {
					if (document.getElementById(e.name).checked==true) {
						sel=0;
					} else {
						sel=1;
					}
				}
				if (sel==1) {
					document.getElementById(e.name).checked=true;
				} else {
					document.getElementById(e.name).checked=false;
				}
			}
		}
	}
}