document.getElementById(\'frmMain\').elements
can i use like this
document.getElementByName(\'frmMain\').elements
If you have given same text name for both of your Id and Name properties you can give like document.getElementByName('frmMain')[index]
other wise object required error will come.And if you have only one table in your page you can use document.getElementBytag('table')[index]
.
EDIT:
You can replace the index according to your form, if its first form place 0 for index.