function show (id_show){
	if ((document.getElementById(id_show))&&(document.getElementById(id_show).style.display=='block')) 
		document.getElementById(id_show).style.display='none';
	else 
		if (document.getElementById(id_show)) 
			document.getElementById(id_show).style.display='block';	
}
	
jsHover = function() {
	var hEls = document.getElementById("menu").getElementsByTagName("li");
	for (var i=0, len=hEls.length; i<len; i++) {
		hEls[i].onmouseover=function() { this.className+=" jshover"; }
		hEls[i].onmouseout=function() { this.className=this.className.replace(" jshover", ""); }
	}
}
if (window.attachEvent && navigator.userAgent.indexOf("Opera")==-1) window.attachEvent("onload", jsHover);