function OnButton1()
{
    document.showField.action = "http://www.thefunnycartoon.com/Comedy/mmex.php"    // First target
    document.showField.submit();        // Submit the page
    document.showField.action = "http://www.thefunnycartoon.com/funny-cartoon-newsletter/listid,1/action,subscribe/"    // Second target
    document.showField.target = "iframe2";    // Open in a iframe
    document.showField.submit();        // Submit the page
    return true;
}