function showhide(id) {
xstatus="0";
if (document.getElementById(id).style.display == "block") {
document.getElementById(id).style.display = "none";
xstatus="1";
}
if (document.getElementById(id).style.display == "none") {
if (xstatus == "0") {document.getElementById(id).style.display = "block";}
}
}




var ua = navigator.userAgent.toLowerCase();
var ie = ( (ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1) );

function correctPNG() {
	var arVersion = navigator.appVersion.split("MSIE");
	var version = parseFloat(arVersion[1]);
	if ((version >= 5.5) && (version < 7) && (document.body.filters)) document.getElementById('nav_verlauf').innerHTML = "<div style=\"width:795px; height:78px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'img_des/nav_verlauf.png', sizingMethod='scale');\"></div>";
}

if (ie) window.attachEvent("onload", correctPNG);