Form tool

var FormTool = {
    submit: function(obj, theForm){
        var f = theForm && theForm.tagName == "FORM" ? theForm : document.createElement("form");
        if(obj){
            var e = false;
            for(var i in obj){
                if(i.toString().charAt(0) == "$"){  // form attribute
                    f.setAttribute(i.toString().substring(1),obj[i]);
                }else{
                    e = document.createElement("input");
                    e.type = "hidden";
                    e.name = i;
                    e.value = obj[i];
                    f.appendChild(e);
                }
            }
        }
        if(!f.parentElement) document.body.appendChild(f);
        f.submit();        
    }
};
// ex:
// FormTool.submit({$action:'/myPage.php',pageIndex:2,pageSize:10});