function PageBack(){
  history.back();
}

function wopen1(){
	window.open("address.html","window1","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=490,height=240")
}

function wopen2(){
	window.open("../address.html","window2","toolbar=0,menuber=0,scrollbars=1,location=0,directories=0,status=0,resizable=1,width=490,height=240")
}