function snapSelectionToWord() {

    var sel;

    // Check for existence of window.getSelection() and that it has a

    // modify() method. IE 9 has both selection APIs but no modify() method.

    if (window.getSelection && (sel = window.getSelection()).modify) {

        //debugger;

        sel = window.getSelection();

        if (!sel.isCollapsed) {

​

            // Detect if selection is backwards

            var range = document.createRange();

            range.setStart(sel.anchorNode, sel.anchorOffset);

            range.setEnd(sel.focusNode, sel.focusOffset);

            var backwards = range.collapsed;

            range.detach();

​

            // modify() works on the focus of the selection

            var endNode = sel.focusNode, endOffset = sel.focusOffset;

            sel.collapse(sel.anchorNode, sel.anchorOffset);

            if (backwards) {

                sel.modify("move", "backward", "character");

                sel.modify("move", "forward", "word");

                sel.extend(endNode, endOffset);

                console.log("BackWords"+sel.anchorOffset+"and "+sel.focusOffset);

                var startObj = sel.anchorOffset;

                var endObj = sel.focusOffset;

                alert(startObj+"_"+endObj);

                sel.modify("extend", "forward", "character");

                sel.modify("extend", "backward", "word");

​

            } else {

                sel.modify("move", "forward", "character");

                sel.modify("move", "backward", "word");

                sel.extend(endNode, endOffset);

                sel.modify("extend", "backward", "character");

                sel.modify("extend", "forward", "word");

                console.log("Forwards"+sel.anchorOffset+"and "+sel.focusOffset);

            }

        }

    } else if ( (sel = document.selection) && sel.type != "Control") {

        var textRange = sel.createRange();

        if (textRange.text) {

            textRange.expand("word");

            // Move the end back to not include the word's trailing space(s),

            // if necessary

            while (/\s$/.test(textRange.text)) {

                textRange.moveEnd("character", -1);

            }

            textRange.select();

        }

    }

}