// rollover

function over() {
	if (!document.getElementById) return
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');
	if (!document.getElementById) return
	var aAll = document.getElementsByTagName('a');
	var ua = navigator.userAgent;
	ua = ua.toUpperCase();
	if(aAll){
		for (var i = 0; i < aAll.length; i++) {
			aAll[i].onfocus = function() {
				this.blur();	
			}
		}
	}

if(aImages){
	for (var i = 0; i < aImages.length; i++) {
		if (aImages[i].className == 'over') {
			var src = aImages[i].getAttribute('src');
			re = new RegExp("_on");
			if (src.match(re)) continue;
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_over'+ftype);
			aImages[i].setAttribute('hsrc', hsrc);
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
				aImages[i].onmouseover = function() {
					sTempSrc = this.getAttribute('src');
					this.setAttribute('src', this.getAttribute('hsrc'));
				}	
				aImages[i].onmouseout = function() {
					if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_over'+ftype, ftype);
					this.setAttribute('src', sTempSrc);
				}
			}
		}
	}

}


function GnavActiveChange() {
	var Body = document.getElementsByTagName('body')[0].id;
	var asrc = Body +"Nav";
	var abtn = document.getElementById(asrc);	
	if(!abtn) return;
	var src = abtn.firstChild.firstChild.getAttribute('src');
	var ftype = src.substring(src.lastIndexOf('.'), src.length);
	var hsrc = src.replace(ftype, '_on'+ftype);
	abtn.firstChild.firstChild.setAttribute('src', hsrc);

}

window.onload = function(){
	GnavActiveChange();
	over();
};



// hack by browser

var css_browser_selector = function() {
	var 
		ua=navigator.userAgent.toLowerCase(),
		is=function(t){ return ua.indexOf(t) != -1; },
		h=document.getElementsByTagName('html')[0],
		b=(!(/opera|webtv/i.test(ua))&&/msie (\d)/.test(ua))?('ie ie'+RegExp.$1):is('gecko/')? 'gecko':is('opera/9')?'opera opera9':/opera (\d)/.test(ua)?'opera opera'+RegExp.$1:is('konqueror')?'konqueror':is('applewebkit/')?'webkit safari':is('mozilla/')?'gecko':'',
		os=(is('x11')||is('linux'))?' linux':is('mac')?' mac':is('win')?' win':'';
	var c=b+os+' js';
	h.className += h.className?' '+c:c;
}();