Data Controls :: Select Item From Dropdownlist Quickly?

Mar 20, 2014

I used scroll bar fo my dropdownlist

below is code
 
<asp:DropDownList ID="DDLcity1" runat="server" CssClass="DDlcityE" OnSelectedIndexChanged="DDLcity1_SelectedIndexChanged"
ForeColor="#ca0202" AutoPostBack="true" onclick="onSelectMouseDown()" onfocusout="this.size=1;">
<script>
function onSelectMouseDown() {
document.getElementById("<%= DDLcity1.ClientID%>").size = 10;
}
</script>

problem is :when I select Item from DDL it select Item with delay I want when I select Item from DDL it select it quicly..

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