var newwindow = ''
function popitup(url,iwidth, iheight) {

		var winwidthheight = 'width=' + iwidth + ',height=' + iheight + ',resizable=1'
    newwindow=window.open(url,'htmlname',winwidthheight);}


function tidy() {
if (newwindow.location && !newwindow.closed) {
   newwindow.close(); }
}
// Based on JavaScript provided by Peter Curtis at www.pcurtis.com -->