// Replaces the currently selected text with the passed text.
function replaceText(text, textarea)
{
// Attempt to create a text range (IE).
if (typeof(textarea.caretPos) != "undefined" && textarea.createTextRange)
{
var caretPos = textarea.caretPos;

caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
caretPos.select();
}
// Mozilla text range replace.
else if (typeof(textarea.selectionStart) != "undefined")
{
var begin = textarea.value.substr(0, textarea.selectionStart);
var end = textarea.value.substr(textarea.selectionEnd);
var scrollPos = textarea.scrollTop;

textarea.value = begin + text + end;

if (textarea.setSelectionRange)
{
textarea.focus();
textarea.setSelectionRange(begin.length + text.length, begin.length + text.length);
}
textarea.scrollTop = scrollPos;
}
// Just put it on the end.
else
{
textarea.value += text;
textarea.focus(textarea.value.length - 1);
}
}

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