var child = null;
function nes1(url,name,h,w) {

    if(child != null && child.location) {
	child.close();
    }

    child = window.open(url,name,'width='+w+','+'height='+h+',noresize,scrollbars=yes,status=no,toolbar=no');

    if(child.opener == null) {
	child.opener = self;
    }
}