var preloadFlag = false;

/*
if (getCookie("vcp-banner") == "") {
	var intRand = Math.floor(Math.random()*2);
	document.cookie = (intRand == 0) ? "vcp-banner=summer" : "vcp-banner=winter";
}
*/

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function preloadImages() {
	if (document.images) {
		nav_home_over = newImage("images/nav_home_over.gif");
		nav_about_over = newImage("images/nav_visit_over.gif");
		nav_artist_over = newImage("images/nav_praise_over.gif");
		nav_member_over = newImage("images/nav_photos_over.gif");
		nav_forum_over = newImage("images/nav_contact_over.gif");
		preloadFlag = true;
	}
}

function init() {
	preloadImages();
}

function writeBanner(strType, intWidth, intHeight) {
	var objDiv = document.getElementById('banner');
	objDiv.innerHTML = "<img src='images/banner_" + strType + "_" + getCookie("vcp-banner") + ".jpg' width='" + intWidth + "' height='" + intHeight + "' alt='Village China' title='Village China'>";
}

function getCookie(strName) {
	var strSearch = strName + "=";
	var strReturn = "";
	if (document.cookie.length > 0) {
		intOffset = document.cookie.indexOf(strSearch);
		if (intOffset != -1) { 
			intOffset += strSearch.length;
			intEnd = document.cookie.indexOf(";", intOffset);
			if (intEnd == -1) {
				intEnd = document.cookie.length;
				strReturn=unescape(document.cookie.substring(intOffset, intEnd));
			}
		}
	}
	return strReturn;
}