//========================= 设置字体大中小 start =============
	function doZoom(size){
		var zw_content = document.getElementById('zw_content');
		if(!zw_content){
			return;
		}
		var zw_contentChild = zw_content.childNodes;
		zw_content.style.fontSize = size + 'px';
		//再对ArticleCnt div内的直接html节点设置fontSize属性
		for(var i = 0; i < zw_contentChild.length; i++){
			if(zw_contentChild[i].nodeType == 1){
				zw_contentChild[i].style.fontSize = size + 'px';
			}
		}		
	}
//========================= 设置字体大中小 end =============


	//双击滚屏代码
	var currentpos,timer;
	
	function initialize()
	{
	timer=setInterval("scrollwindow()",50);
	}
	
	function sc(){
	clearInterval(timer);
	}
	
	function scrollwindow()
	{
	currentpos=document.body.scrollTop;
	window.scroll(0,++currentpos);
	if (currentpos != document.body.scrollTop)
		sc();
	}
	document.onmousedown=sc
	document.ondblclick=initialize