Hey Crissy!
🙂There are two parts...
Put this in the CUSTOM HEAD HTML:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('.select-toggle').each(function(){
var select = $(this), values = {};
$('option',select).each(function(i, option){
values[option.value] = option.selected;
}).click(function(event){
values[this.value] = !values[this.value];
$('option',select).each(function(i, option){
option.selected = values[option.value];
});
});
});
});
</script>
Put this in a custom HTML element (and change out 1,2,3,4 with your actual select values):
<select class="select-toggle" multiple="multiple">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>