function EXdiv(sou,obj,num,len){
    for(var id = 1;id<=len;id++){
	  var sd=sou+id;
	  var od=obj+id;
	  if(id==num){
	    document.getElementById(sd).style.borderBottomColor="white";
	    document.getElementById(od).style.display="block";
	  }else{
	    document.getElementById(sd).style.borderBottomColor="#CCCCCC";
	    document.getElementById(od).style.display="none";
	  }
	}  
}
function EXpic(idN,Purl){
  document.getElementById(idN).src=Purl;
}