///* 顶部天幕广告 MZ_TopAD.js *///
// 实例：CSS	#content {margin:0 auto;width:968px;height:0;overflow:hidden;background:url(/AD/img/Qinglc968x550.jpg) repeat-x;clear:both;}	/* 天幕 */
//				#key {float:right;cursor:hand;margin:5px 5px 0 0;width:40px;height:16px;line-height:16px;text-align:center;background:#FFFFFF;border:#AAAAAA 1px solid;font-size:12px;}
//	<div id="content" onclick="window.open('/Item/101.shtml');" title="TopAdPic"><div id="key" onclick="shoppingcat();">展开</div><script>setTimeout("shoppingcat();",12000);</script></div>
//	<script type="text/javascript">	setTimeout("shoppingcat();",50);</script> *//
/////////////////////////////////////////////////////////////////////////////////

var s = 300;			//步进高度
var minheight = 0;
var maxheight = 300;	//最大高度
function shoppingcat(){
	var key = document.getElementById("key");
	var content = document.getElementById("content");
	if(key.innerText=="展开"){
		content.style.pixelHeight+=s;
		if(content.style.pixelHeight<maxheight){
			setTimeout("shoppingcat();",1);
		}else{
			key.innerText="关闭";		//关闭
		}
	}else{
		content.style.pixelHeight-=s;
		if(content.style.pixelHeight>minheight){
			setTimeout("shoppingcat();",1);
		}else{
			key.innerText="展开";	//打开
		}
	}
}