//image-swap-related
function MM_swapImgRestore() { //v3.0
	var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
	if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


//banner-related
function banner(img_source,url,alt,chance) {
	this.img_source = img_source;
	this.url = url;
	this.alt = alt;
	this.chance = chance;
}

function display() {
	with (this) document.write("<A HREF=" + url + "><IMG SRC='" + img_source + "' WIDTH=468 HEIGHT=60 BORDER=0 ALT='" + alt + "'></A>");
}

function display_banner() {
	chance_limit = 0;
	randomly_selected_chance = Math.round((sum_of_all_chances - 1) * Math.random()) + 1;
	for (i = 0; i < banners.length; i++) {
		chance_limit += banners[i].chance;
		if (randomly_selected_chance <= chance_limit) {
			document.write("<A HREF=" + banners[i].url + "><IMG SRC='" + banners[i].img_source + "' WIDTH=468 HEIGHT=60 BORDER=0 ALT='" + banners[i].alt + "'></A>");
			return banners[i];
			break;
		}
	}
}

banner.prototype.display = display;
banners = new Array();
banners[0] = new banner("/Images/banner1.gif",
                    "http://samsungelectronics.com",
                    "Samsung Electronics",
                    50);
banners[1] = new banner("/Images/banner2.gif",
                    "http://www.lge.co.kr",
                    "LG Electronics",
                    50);
sum_of_all_chances = 0;
for (i = 0; i < banners.length; i++) {
	sum_of_all_chances += banners[i].chance;
}