/**
 * Copyright (c) 2009 Sergiy Kovalchuk (serg472@gmail.com)
 * 
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *  
 * Following code is based on Element.mask() implementation from ExtJS framework (http://extjs.com/)
 *
 */
(function(a){
    a.fn.mask = function(c) {
        this.unmask();
        if(this.css("position") == "static") {
            this.addClass("masked-relative")
        }

        this.addClass("masked");
        var d = a('<div class="loadmask"></div>');

        if(navigator.userAgent.toLowerCase().indexOf("msie") > -1) {
            d.height(this.height() + parseInt(this.css("padding-top")) + parseInt(this.css("padding-bottom")));
            d.width(this.width() + parseInt(this.css("padding-left")) + parseInt(this.css("padding-right")))
        }

        if(navigator.userAgent.toLowerCase().indexOf("msie 6") > -1){
            this.find("select").addClass("masked-hidden")
        }

        this.append(d);

        if(typeof c == "string") {
            var b = a('<div class="loadmask-msg" style="display:none;"></div>');
            b.append('<div class="load-mask-container">' + c + '</div>');
            this.append(b);
            b.css("top", Math.round(this.height() / 2 - (b.height() - parseInt(b.css("padding-top")) - parseInt(b.css("padding-bottom"))) / 2) + "px");
            b.css("left",Math.round(this.width() / 2 - (b.width() - parseInt(b.css("padding-left")) - parseInt(b.css("padding-right"))) / 2) + "px");
            b.show()
        }
    };

    a.fn.unmask = function(b){
        this.find(".loadmask-msg, .loadmask").remove();
        this.removeClass("masked");
        this.removeClass("masked-relative");
        this.find("select").removeClass("masked-hidden")
    }
}
)(jQuery);