Jquery dialog box not workin in Internet explorer.

Hi,
i have created a dialog box which shows success msg to user.I am calling the dialog box through this function call:-

setDialogbox('saveMultiChoiceQ','newDialogMessage', 'success', 'newDialogMessage1',succ_create_question,'','600','250',txt_success,'','',' ');

and setdialog.js file consits the function.