function popUp(URL) {

popUp(URL, 'auto', 'auto')
}

function popUp(URL, width, height) {

day = new Date();
id = day.getTime();
window.open(URL, id , 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=' + width + ',height=' + height +',left = 325,top = 175');

}