function pbook(id){
		if(id==1){
		document.getElementById('pbook_1').className="btn01";
		document.getElementById('pbook_2').className="btn02";
		document.getElementById('pbook_1c').style.display="block";
		document.getElementById('pbook_2c').style.display="none";
		}
		else if(id==2){
		document.getElementById('pbook_1').className="btn02";
		document.getElementById('pbook_2').className="btn01";
		document.getElementById('pbook_1c').style.display="none";
		document.getElementById('pbook_2c').style.display="block";
		}
		}


		  function pr2(id){
		  if(id==1){
		    document.getElementById('pr2_1').className="bg01";
		    document.getElementById('pr2_2').className="bg02";
			document.getElementById('pr2_1c').style.display="block";
			document.getElementById('pr2_2c').style.display="none";
			}
		  else if(id==2){
		    document.getElementById('pr2_1').className="bg01a";
		    document.getElementById('pr2_2').className="bg02a";
			document.getElementById('pr2_1c').style.display="none";
			document.getElementById('pr2_2c').style.display="block";
		  }
		  }