function doZoom(size,height)
{
	//alert(document.getElementById('id_topicreply'));		
	try{
		document.getElementById('contents').style.fontSize=size+'px';
		//document.getElementById('id_topictail').style.fontSize=size+'px';
	}catch(e){
	}
	for(i=0;i<50;i++){
		try{
			document.getElementById('id_topicreply'+i).style.fontSize=size+'px';
		}catch(e){
		}
	}
	/*
	document.getElementById('zoom1').style.background-color = '';
	document.getElementById('zoom2').style.background-color = '';
	document.getElementById('zoom3').style.background-color = '';
	if(size == 16){
		document.getElementById('zoom1').style.background-color = '#F3F3F3';
	}else if(size == 14{
		document.getElementById('zoom2').style.background-color = '#F3F3F3';
	}else if(size == 12){
		document.getElementById('zoom3').style.background-color = '#F3F3F3';
	}
	*/
	//document.getElementById('td').style.lineHeight= height+'px';
}
// 修复 IE 下 PNG 图片不能透明显示的问题
function fixPNG(myImage) {
	var arVersion = navigator.appVersion.split("MSIE");
	var version = parseFloat(arVersion[1]);
	if ((version >= 5.5) && (version < 7) && (document.body.filters)){
		 var imgID = (myImage.id) ? "id='" + myImage.id + "' " : "";
		 var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : "";
		 var imgTitle = (myImage.title) ? "title='" + myImage.title   + "' " : "title='" + myImage.alt + "' ";
		 var imgStyle = "display:inline-block;" + myImage.style.cssText;
		 var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + myImage.width + "px; height:" + myImage.height + "px;" + imgStyle + ";"	+ "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>";
		 myImage.outerHTML = strNewHTML;
	}
}