JQuery :: Diagonal And Vertical Text Selection

Is there anything out there that allows for a diagonal and vertical text capture in javascript or jQuery? I was not successful in finding anything. I have a game similar to word find that I've developed, but I need to be able to capture text vertically and diagonally. Otherwise, the only solution will be for me to do a by-click basis to capture items on the screen. I found the script below which handles horizontal capturing:

<script type="text/javascript">
document.body.style.cursor="url(3DArrow.cur), crosshair" ;
if (!window.Kolich){
Kolich = {};
} Kolich.Selector = {};
Kolich.Selector.getSelected = function(){
var t = '';
if (window.getSelection){
t = window.getSelection();
}else if(document.getSelection){
t = document.getSelection();
}else if(document.selection){
t = document.selection.createRange().text;
}return t;
}Kolich.Selector.mouseup = function(){
var st = Kolich.Selector.getSelected();
sel_text=st.replace(/s/gi,"");
if(st!=''){
alert("You selected:"+sel_text);
}}
$(document).ready(function(){
$(document).bind("mouseup", Kolich.Selector.mouseup);});
</script>