* fixed syntax errors of javascript.
* updated document.
* updated clientLang function in unities.js.
+ added browser.js.
 * fixed datatable for ie8 and firefox.
 * fit any size of table cells.
 * updated example of dialog.
 * updated zentao config and zentao themes.
 * updated datatable.
 * fixed event name of calendar.
 * removed debug code from calendar.js.