function BildVergr(fn_obj,wmin,hmin,wmax,hmax) {
	szQuelle = fn_obj.src;
	if (szQuelle.indexOf("_gr.jpg") == -1) {
		fn_obj.src = szQuelle.replace(/.jpg/,"_gr.jpg");
		fn_obj.style.setAttribute("width", (wmax + "px"));
		fn_obj.style.setAttribute("height",(hmax + "px"));
	}
	else {
		fn_obj.src = szQuelle.replace(/_gr.jpg/,".jpg");
		fn_obj.style.setAttribute("width", wmin + "px");
		fn_obj.style.setAttribute("height", hmin + "px");
	}
}

function blurLink(fn_wert) {

}