var NowDate=new Date("2010/3/11");
var StartDate=new Date("2007/10/1");
var EndDate=new Date("2015/2/8");
var Adcontent="20092103222393267.gif";
var InsteadAD="";
var IsShow=true;
if ((IsShow)&&(NowDate>=StartDate)&&(NowDate<EndDate)){
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}else{
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}