function $$(id) { return document.getElementById(id); }
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}
function addBtn() {
	if (!$$('ibanner') || !$$('ibanner_pic')) return;
	var picList = $$('ibanner_pic').getElementsByTagName('a');
	if (picList.length == 0) return;
	var btnBox = document.createElement('div');
	btnBox.setAttribute('id', 'ibanner_btn');
	var SpanBox = '';
	for (var i = 1; i <= picList.length; i++) {
		var spanList = '<span class="normal">' + i + '</span>';
		SpanBox += spanList;
	}
	btnBox.innerHTML = SpanBox;
	$$('ibanner').appendChild(btnBox);
	$$('ibanner_btn').getElementsByTagName('span')[0].className = 'current';
	for (var m = 0; m < picList.length; m++) {
		var attributeValue = 'picLi_' + m
		picList[m].setAttribute('id', attributeValue);
	}
}
function moveElement(elementID, final_x, final_y, interval) {
	if (!document.getElementById) return false;
	if (!document.getElementById(elementID)) return false;
	var elem = document.getElementById(elementID);
	if (elem.movement) {
		clearTimeout(elem.movement);
	}
	if (!elem.style.left) {
		elem.style.left = "0px";
	}
	if (!elem.style.top) {
		elem.style.top = "0px";
	}
	var xpos = parseInt(elem.style.left);
	var ypos = parseInt(elem.style.top);
	if (xpos == final_x && ypos == final_y) {
		moveing = false;
		return true;
	}
	if (xpos < final_x) {
		var dist = Math.ceil((final_x - xpos) / 10);
		xpos = xpos + dist;
	}
	if (xpos > final_x) {
		var dist = Math.ceil((xpos - final_x) / 10);
		xpos = xpos - dist;
	}
	if (ypos < final_y) {
		var dist = Math.ceil((final_y - ypos) / 10);
		ypos = ypos + dist;
	}
	if (ypos > final_y) {
		var dist = Math.ceil((ypos - final_y) / 10);
		ypos = ypos - dist;
	}
	elem.style.left = xpos + "px";
	elem.style.top = ypos + "px";
	var repeat = "moveElement('" + elementID + "'," + final_x + "," + final_y + "," + interval + ")";
	elem.movement = setTimeout(repeat, interval);
}
function classNormal() {
	var btnList = $$('ibanner_btn').getElementsByTagName('span');
	for (var i = 0; i < btnList.length; i++) {
		btnList[i].className = 'normal';
	}
}
function picZ() {
	var picList = $$('ibanner_pic').getElementsByTagName('a');
	for (var i = 0; i < picList.length; i++) {
		picList[i].style.zIndex = '1';
	}
}
var autoKey = false;
function iBanner() {
	if (!$$('ibanner') || !$$('ibanner_pic') || !$$('ibanner_btn')) return;
	$$('ibanner').onmouseover = function() { autoKey = true };
	$$('ibanner').onmouseout = function() { autoKey = false };
	var btnList = $$('ibanner_btn').getElementsByTagName('span');
	var picList = $$('ibanner_pic').getElementsByTagName('a');
	if (picList.length == 1) return;
	picList[0].style.zIndex = '2';
	for (var m = 0; m < btnList.length; m++) {
		btnList[m].onmouseover = function() {
			for (var n = 0; n < btnList.length; n++) {
				if (btnList[n].className == 'current') {
					var currentNum = n;
				}
			}
			classNormal();
			picZ();
			this.className = 'current';
			picList[currentNum].style.zIndex = '2';
			var z = this.childNodes[0].nodeValue - 1;
			picList[z].style.zIndex = '3';
			if (currentNum != z) {
				picList[z].style.left = '650px';
				moveElement('picLi_' + z, 0, 0, 10);
			}
		}
	}
}
setInterval('autoBanner()', 5000);
function autoBanner() {
	if (!$$('ibanner') || !$$('ibanner_pic') || !$$('ibanner_btn') || autoKey) return;
	var btnList = $$('ibanner_btn').getElementsByTagName('span');
	var picList = $$('ibanner_pic').getElementsByTagName('a');
	if (picList.length == 1) return;
	for (var i = 0; i < btnList.length; i++) {
		if (btnList[i].className == 'current') {
			var currentNum = i;
		}
	}
	if (currentNum == (picList.length - 1)) {
		classNormal();
		picZ();
		btnList[0].className = 'current';
		picList[currentNum].style.zIndex = '2';
		picList[0].style.zIndex = '3';
		picList[0].style.left = '650px';
		moveElement('picLi_0', 0, 0, 10);
	} else {
		classNormal();
		picZ();
		var nextNum = currentNum + 1;
		btnList[nextNum].className = 'current';
		picList[currentNum].style.zIndex = '2';
		picList[nextNum].style.zIndex = '3';
		picList[nextNum].style.left = '650px';
		moveElement('picLi_' + nextNum, 0, 0, 10);
	}
}
addLoadEvent(addBtn);
addLoadEvent(iBanner);