function comptime(YY,MM,DD,ads_P){
  d=new Date()
  var beginTimes=new Date(d.getFullYear(),d.getMonth(),d.getDate()); 
  var endTimes=new Date(YY,MM-1,DD); 
  var days_diff=(endTimes.valueOf()-beginTimes.valueOf())/86400000;
//alert(beginTimes)
  	if(days_diff<0){
  	  if(ads_P=='L1'){document.all.L1.innerHTML='<span class=AD150><img src=adrot_img/'+ads_P+'.gif width=150 height=120 border=0></span>'}
  	  if(ads_P=='L2'){document.all.L2.innerHTML='<span class=AD150><img src=adrot_img/'+ads_P+'.jpg width=150 height=120 border=0></span>'}
  	  if(ads_P=='R1'){document.all.R1.innerHTML='<span class=AD150><img src=adrot_img/'+ads_P+'.gif width=150 height=120 border=0></span>'}
  	  if(ads_P=='R2'){document.all.R2.innerHTML='<span class=AD150><img src=adrot_img/'+ads_P+'.gif width=150 height=120 border=0></span>'}
  	  if(ads_P=='B1'){document.all.B1.innerHTML='<span class=AD150><img src=adrot_img/'+ads_P+'.gif width=777 height=87 border=0></span>'}
	}
}