Change or resize glyph icon

[Gonzalo]

I have a datepicker to filter a GridDateTimeColumn of a RadGrid. Since the default size of the filter textbox was too big, I have made it smaller, along with the datepicker button. However, I wasn't able to resize the calendar icon of the datepicker button which is now overflowing (see attached image).

I tried using the debug tools of every browser to find out the name of the glyph icon or the CSS class that implement it but wasn't successful.

Is there a way to change or resize this icon, maybe through jQuery?

Thanks in advance!

[Gonzalo]

I found a workaround, just in case someone faces the same problem.

To change the size of the icon I added this CSS rule:

.RadGrid .rcCalPopup:before {
        font-size: 12px !important;
 }