Selecting One Select List Box Item Selects All?

I currently have two html select list boxes side by side on a form, two buttons in between the boxes to move items from list box to the other, and a javascript function to control the movement of the items from one box to the other. Here is the javascript:

function MoveSelected(from, to) {
var lstFrom = $(from);
var lstTo = $(to);
for (var i = 0; i<lstFrom.length;i++) {

[Code].....

Destination List Box:

<select name="lstSelectProd" id="lstSelectProd" multiple="true" size="8" style="width: 250px;">
</select>select name=