/* Wird benötigt für den IE6 und älter */
function showHGM2(element){
		element.className += "hover";
	}
function hideHGM2(element){
		element.className = element.className = "";
	}
<!--
    function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.visibility == 'visible')
          e.style.visibility = 'hidden';
       else
          e.style.visibility = 'visible';
    }
//-->