function popup(URL,windowname,scrollbars,width,height) {
	newwindow = window.open(URL,windowname,'toolbar=NO,location=NO,directories=NO,status=NO,menubar=YES,scrollbars=' + scrollbars + ',resizable=YES,copyhistory=NO,width=' + width + ',height=' + height);
    if(newwindow) {
	    newwindow.focus()
        }
     else {
        alert('Hello. It appears that your browser includes a poupup blocker that is preventing this link from opening.\nTo see the requested information, please adjust your popup blocker to allow popups from this site.');
        }
}