global.js on admin panel

[wMan]

got error on global,js error making line

        obj.firstChild.nodeValue = val;

part of code

function descriptor(val) {
        var obj;
        obj = document.getElementById("descriptor");
        if (!obj) return;
        obj.firstChild.nodeValue = val;
}

error code Error: obj.firstChild is null
Source File: http://pegasus.woano.lv/global.js
Line: 54

i bet i screwed up something

[joeroberts]

can you please tell me more info
where you got this error
how you got it
what you where doing(trying to do)

[wMan]

eh that's youst my error console it shows errors of scripts css etc so when i open admincp it shows this in console