[The M.I.P.]

I get JavaScript error with Opera 7:

Event thread: onclick
Error:
name: TypeError
message: Statement on line 53: Expression evaluated to null or undefined and is not convertible to Object: document.selection
Backtrace:
Line 53 of linked script http://localhost/vBtest/vbcode.js
text = text;
In unknown script
getActiveText(this);
At unknown location
{event handler trampoline}

Line 53 is located in getActiveText() and looks like

text = (document.all) ? document.selection.createRange().text : document.getSelection();

Is there a fix to this?