function openpopup(thisurl,thiswidth,thisheight) {
	tisurl=thisurl;
	tiswidth=thiswidth;
	tisheight=thisheight;
	popwindow=window.open(tisurl, 'newwindow','resizable=yes,toolbar=no,width='+tiswidth+',height='+tisheight+',status=no,location=no');
	popwindow.focus();
}