function switchlayer(Layer_Name)
{
	var GECKO = document.getElementById? 1:0 ;
	var NS = document.layers? 1:0 ;
	var IE = document.all? 1:0 ;

	if (GECKO)
		{document.getElementById(Layer_Name).style.display=
		(document.getElementById(Layer_Name).style.display=='block') ? 'none' : 'block';}
	else if (NS)
		{document.layers[Layer_Name].display=(document.layers[Layer_Name].display==
		'block') ? 'none' : 'block';}
	else if (IE)
		{document.all[Layer_Name].style.display=(document.all[Layer_Name].style.display==
		'block') ? 'none' : 'block';}
}



function Autowahl(strText) {

var objVis0 = document.getElementById("Audi");
objVis0.style.display = (strText.match(/(1|2|3)/i)) ? 'none' : 'block';
var objVis1 = document.getElementById("BMW");
objVis1.style.display = (strText.match(/(0|2|3)/i)) ? 'none' : 'block';
var objVis2 = document.getElementById("Opel");
objVis2.style.display = (strText.match(/(0|1|3)/i)) ? 'none' : 'block';
var objVis3 = document.getElementById("VW");
objVis3.style.display = (strText.match(/(0|1|2)/i)) ? 'none' : 'block';

}