Does Essential Grid support browsers other than Internet Explorer?
In addition to Internet Explorer, deployed Essential Grid pages are compatible with other browsers like Netscape, FireFox and and can also be viewed on Macintosh systems. (NOTE: Currently there is no support for Safari.)
Ensure that the machine.config's (on the deployed system) browsercaps section includes appropriate entries for Mozilla etc. The default entries deem these browsers as downlevel and hence will not render the control(s) properly. You can get the appropriate entries