The Jquery Ui multiselect plugin apparently uses the height and width values โโof the select element you are invoking.
For example, if you have a choice:
<select id="locations" class="multiselect" multiple="multiple" name="locations[]" style="width:300px; height:300px;">
Then call:
$(".multiselect").multiselect();
Your new multiselke will have dimensions of 300x300.
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