(function(){
        function walkTheDOM (node, func) {
            func(node);
            node = node.firstChild;
            while (node) {
                walkTheDOM(node, func);
                node = node.nextSibling;
            }
        }

        function getElementsByClassName (className) {
            var results = [];
            walkTheDOM(document.body, function (node) {
                var a, c = node.className, i;
                if (c) {
                    a = c.split(' ');
                    for (i=0; i<a.length; i++) {
                        if (a[i] === className) {
                            results.push(node);
                            break;
                        }
                    }
                }
            });
            return results;
        }
        var i, j, id, e, inputs;
	
        /* Simple calendars */
        for (i=0, inputs=getElementsByClassName('init-calendar'); i<inputs.length; ++i)
            new tcal({
                'controlname':inputs[i].id, 
                'place':inputs[i].parentNode, 
                'lang':'ru'
            });
		
        /* Calendar intervals */
        for(i=0, inputs=getElementsByClassName('init-calendar-interval'); i<inputs.length; ++i){
            id = inputs[i].id;
            for(j=0; j<2; ++j){
                e = f_getElement(id + '['+j+']');
                new tcal({
                    'controlname':e.id, 
                    'place':e.parentNode, 
                    'lang':'ru',
                    'intervalpair':[
                        id + '[0]',
                        id + '[1]'
                    ],
                    'intervalupdatecont' : id
                });
            }
        }
 })();