[Javascript] createTextRange

[Michael Borchers]

found an old function that worked fine so far in IE but not in FF. FF says createTextRange() is no function. why?

the function is started by an textarea onselect=markText(this)

here is the function:
function markText (objText)
{
    if (objText.createTextRange())
{
 objText.selected_range = document.selection.createRange().duplicate();
 objText.cSelected = document.selection.createRange().text;
 tmpText=document.selection.createRange().text;
}
}
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