Jquery customized combobox is not working in IE11-DocumentType=7 or 8

Jquery customized combobox is not working in IE11-DocumentType=7 or 8

Hi,

Please find below link code im using the same in my application.

http://www.learningjquery.com/2010/06/a-jquery-ui-combobox-under-the-hood/


Thanks,

Shankar