//Mozilla and DOM 3.0
if(‘selectionStart’ in e)
{
var l = e.selectionEnd – e.selectionStart;
return { start: e.selectionStart, end: e.selectionEnd, length: l, text: e.value.substr(e.selectionStart, l) };
}
//IE
else if(document.selection)
{
e.focus();
var r = document.selection.createRange();
var tr = e.createTextRange();
var tr2 = tr.duplicate();
tr2.moveToBookmark(r.getBookmark());
tr.setEndPoint(‘EndToStart’,tr2);
if (r == null || tr == null) return { start: e.value.length, end: e.value.length, length: 0, text: ” };
var text_part = r.text.replace(/[\r\n]/g,’.'); //for some reason IE doesn’t always count the \n and \r in the length
var text_whole = e.value.replace(/[\r\n]/g,’.');
var the_start = text_whole.indexOf(text_part,tr.text.length);
return { start: the_start, end: the_start + text_part.length, length: text_part.length, text: r.text };
}
//Browser not supported
else return { start: e.value.length, end: e.value.length, length: 0, text: ” };
}

function replace_selection(the_id,replace_str)
{
var e = document.getElementById(the_id);
selection = get_selection(the_id);
var start_pos = selection.start;
var end_pos = start_pos + replace_str.length;
e.value = e.value.substr(0, start_pos) + replace_str + e.value.substr(selection.end, e.value.length);
set_selection(the_id,start_pos,end_pos);
return {start: start_pos, end: end_pos, length: replace_str.length, text: replace_str};
}

function set_selection(the_id,start_pos,end_pos)
{
var e = document.getElementById(the_id);

//Mozilla and DOM 3.0
if(‘selectionStart’ in e)
{
e.focus();
e.selectionStart = start_pos;
e.selectionEnd = end_pos;
}
//IE
else if(document.selection)
{
e.focus();
var tr = e.createTextRange();

//Fix IE from counting the newline characters as two seperate characters
var stop_it = start_pos;
for (i=0; i < stop_it; i++) if( e.value[i].search(/[\r\n]/) != -1 ) start_pos = start_pos – .5;
stop_it = end_pos;
for (i=0; i < stop_it; i++) if( e.value[i].search(/[\r\n]/) != -1 ) end_pos = end_pos – .5;

tr.moveEnd('textedit',-1);
tr.moveStart('character',start_pos);
tr.moveEnd('character',end_pos – start_pos);
tr.select();
}
return get_selection(the_id);
}

function wrap_selection(the_id, left_str, right_str, sel_offset, sel_length)
{
var the_sel_text = get_selection(the_id).text;
var selection = replace_selection(the_id, left_str + the_sel_text + right_str );
if(sel_offset !== undefined && sel_length !== undefined) selection = set_selection(the_id, selection.start + sel_offset, selection.start + sel_offset + sel_length);
else if(the_sel_text == '') selection = set_selection(the_id, selection.start + left_str.length, selection.start + left_str.length);
return selection;
}

//Your welcome everyone