$(document).ready(function() {

    $(".open_dialog").live("click", open_dialog);
    
});

var open_dialog = function(){

    var href = $(this).attr("href");

    window.open(href, "", "top=10, left=10, width=720, height=500, status=no, menubar=no, toolbar=no, scrollbars=yes");

    return false;

}