Added isInt method to check tab id instead of using a regular expression
Added isInt method to check tab id instead of using a regular expression

wangliming/tabbedcontent,LOK-Soft/tabbedcontent,elboletaire/tabbedcontent,LOK-Soft/tabbedcontent,LOK-Soft/tabbedcontent,elboletaire/tabbedcontent,elboletaire/tabbedcontent,wangliming/tabbedcontent