I want to let the user select when the shift key is held.
$("#div").selectable({
start: function(st) {
$(window).keydown(function(e){
if(!e.shiftKey){
st.stopPropagation();
}
});
});
no?
You can shorten down your code to be much simpler by using the .shiftKey property on the event directly (it's present in the mousedown event too), like this:
$("#div").mousedown(function(e){
if(e.shiftKey) return;
e.stopImmediatePropagation();
return false;
}).selectable();