function debugStackPush(a) {
	if(IS_DEBUG) {
		var li = document.createElement("LI");
		li.innerHTML=a.li.id;

		if(stackScreen.insertAdjacentElement) stackScreen.insertAdjacentElement("afterBegin", li); // IE
		else stackScreen.appendChild(li); // Mozilla
	}
}

function debugStackPop(a) {
	if(IS_DEBUG) {
		var lis = stackScreen.childNodes;
		try {
			lis[0].removeNode(true);
		} catch(e) {
			//
		}
	}
}

function debugHotItem(text) {
	if(IS_DEBUG) {
		var ele = document.getElementById("eHotItem");
		ele.innerText=text;
	}
}

function debugLastHotItem(text) {
	if(IS_DEBUG) {
		var ele = document.getElementById("eLastHotItem");
		ele.innerText=text;
	}
}