function cleanWhitespace(element) {
for (var i = 0;i<element.childNodes.length;i++) {
	var node = element.childNodes[i]
	if (node.nodeType ==3 && !/\S/.test(node.nodeValue))
	node.parentNode.removeChild(node);
	}
}
/* ÕÛµþ²Ëµ¥ */
function showHideitem(o) {
	var parentDiv = o.parentNode
	cleanWhitespace(parentDiv)
	if (o.nextSibling.style.display=="none"){
	o.nextSibling.style.display=""
	o.childNodes[0].childNodes[0].src="images/icoExtend.gif"
	}else{
	o.nextSibling.style.display="none"
	o.childNodes[0].childNodes[0].src="images/icoClose.gif"
	}
}