function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}

function preloadImages() {
    [
		'btn_inquiry_on.jpg',
		'btn_bgnr_on.jpg',
		'btn_aboutvt_on.jpg',
    ].each(function(image){ new Image().src = '/imgs/' + image; });
}

function preloadImages() {
    [
		'btn_close_on.jpg',
		'btn_winxp_on.jpg',
		'btn_winvista7_on.jpg',
    ].each(function(image){ new Image().src = '/imgs/popup/' + image; });
}


    var win;

    var opt_ary = new Array(9);
    opt_ary["directories"]=0;
    opt_ary["location"]=0;
    opt_ary["menubar"]=0;
    opt_ary["resizable"]=0;
    opt_ary["scrollbars"]=1;
    opt_ary["status"]=0;
    opt_ary["toolbar"]=0;
    opt_ary["top"]=20;
    opt_ary["left"]=0;
    opt_ary["width"]=620;
    opt_ary["height"]=650;

    function winOpen(url,window_name){
        var opt="";
        opt+=(opt_ary["directories"]==1)?"directories=1,":"";
        opt+=(opt_ary["location"]==1)?"location=1,":"";
        opt+=(opt_ary["menubar"]==1)?"menubar=1,":"";
        opt+=(opt_ary["resizable"]==1)?"resizable=1,":"";
        opt+=(opt_ary["scrollbars"]==1)?"scrollbars=1,":"";
        opt+=(opt_ary["status"]==1)?"status=1,":"";
        opt+=(opt_ary["toolbar"]==1)?"toolbar=1,":"";
        opt+=(opt_ary["top"]>0)?"top="+opt_ary["top"]+",":"";
        opt+=(opt_ary["left"]>0)?"left="+opt_ary["left"]+",":"";
        opt+=(opt_ary["width"]>0)?"width="+opt_ary["width"]+",":"";
        opt+=(opt_ary["height"]>0)?"height="+opt_ary["height"]+",":"";
        if(!win || win.closed){
            win = window.open(url,window_name,opt);
        }else{
	        win = window.open(url,window_name,opt);
            win.focus();
        }
    }