function popup(FILE, FEATURES) { 
CONTENT = "<HTML><HEAD><TITLE>Horse Head</TITLE></HEAD>" + "<BODY><FORM><INPUT TYPE='BUTTON' VALUE='Close'" + "onClick='window.close()'></FORM><CENTER><P><IMG SRC='" + FILE + "' BORDER=0>" + "</CENTER>"+ "</BODY></HTML>";
pop = window.open("","",FEATURES);
pop.document.open();
pop.focus();
pop.document.write(CONTENT);
pop.document.close();

}