function CommentForm() {
    this.height = '180',
    this.width = '100%',
    this.base_url = '',
    this.obj_id = '',
    this.label = '',
    this.content_type = '',
    this.formId = '',
    this.url = '',
    this.initialize = function(params) {
        for(key in params) {
            this[key] = params[key];
        }
        this.formId = 'comment_iframe_'+this.obj_id;
    },
    this.iframe = function() {
        var src = '<iframe id="'+this.formId+'" height="'+this.height+'" allowTransparency="true" ' + 
        ' frameborder="0" scrolling="no" style="width:'+this.width+';border:none" src="'+this.url()+'"></iframe> ';
        return src;
    },
    this.display = function() {
        document.write(this.iframe());
    },
    this.url = function() {
        return this.base_url + 'myblogs/' + this.label + '/comments/form/' + this.content_type + '/' + this.obj_id + '/';
    }
}