String.prototype.formatHtml = function()
{
	 return this.replace("\'","&quot;").replace("\"","&quot;").replace(">","&gt;").replace("<","&lt;");
}

//设置文档字体
function setFontSize (n){
	var obj=document.getElementById("articleArea");
	if (obj){
		var wordFontSize=n;
		obj.className="word"+n;
		setCookie("wordFontSize",wordFontSize);
	}
}

//cookie处理函数组
function setCookie(name,value,Days){
	Days=(Days==undefined)?30:Days;
    var exp  = new Date();
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}