function showPopup(url) {
newwindow=window.open(url,'signup','height=600,width=650,top=200,left=300,resizable');
if (window.focus) {newwindow.focus()}
}

function target_popup(form) {
    window.open('', 'formpopup', 'height=600,width=650,top=200,left=300,resizable');
    form.target = 'formpopup';
}