jsHover = function() {
	var hEls = document.getElementById("nav").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);


function hide_hint (tmp)
{
	var reg=/XXX/;
	if (tmp) str = tmp.value; 
	if (reg.test(str)) {
	tmp.value = '';
	tmp.className = '';
	}
}