run-time error

This is probably due to having script debugging enabled. By default, IE will enable script debugging, ths means any web page with script errors (MANY OF THEM) will return the runtime error. Now if you were a web designer, you could see how your pages display in various browserw this way (an ancient debugging method for web pages but still popular in VB etc.)

To disable it,

While in IE go to Tools, select Internet Options, go to the advanced tab, be sure "Disable script debugging" IS selected and "Display a
notification about every script error" is NOT selected, click apply and ok.
Reastart your browser and it should be fixed now.