var count=0;
function popupwin(pname,w,h,roll) {
var Shome="http://www.minamitajima.com/";
var Sjump=Shome + pname;
  w=window.open(Sjump, w+'popup'+count, 'width='+w+',height='+h+',scrollbars='+roll+',status=no,directories=no,menubar=no,resizable=no,toolbar=no');
w.window.focus();
count++;
}