Find input Cursor

cursor-finder.js

function getCursorPos() {
var cursorPos;
if (window.getSelection) {
var selObj = window.getSelection();
var selRange = selObj.getRangeAt(0);
cursorPos =  findNode(selObj.anchorNode.parentNode.childNodes, selObj.anchorNode) + selObj.anchorOffset;
/* FIXME the following works wrong in Opera when the document is longer than 32767 chars */
alert(cursorPos);
}
else if (document.selection) {
var range = document.selection.createRange();
var bookmark = range.getBookmark();
/* FIXME the following works wrong when the document is longer than 65535 chars */
cursorPos = bookmark.charCodeAt(2) - 11; /* Undocumented function [3] */
alert(cursorPos);
}
}

function findNode(list, node) {
for (var i = 0; i < list.length; i++) {
if (list[i] == node) {
return i;
}
}
return -1;
}