// JavaScript Document
function RectChange(id,cur,len,canshu) {
  for(i=1;i<=len;++i)
  {
	  document.getElementById(id + "A" +i).style.display='none';
	   document.getElementById(id + "B" +i).className='';
  }
  document.getElementById(id + "A" +cur).style.display='';
  //rxA1;
   document.getElementById(id + "B" +cur).className=canshu;
}