Run a javascript function on item click of a list box or a html input select

I have a  System.Web.UI.HtmlControls.HtmlSelect which is run at server used instead of an listbox as it has a microsoft bug it does not render attributes.add ,

Now using the Html input control run at server iam able to this

lstBoxUsers.Items(j).Attributes.Add("style", "color:gray")
like setting colurs for individual item

But i need to run a javascript function on item click of the lstboxUser

lstBoxUsers.Items(j).Attributes.Add("Onclick", "return javascriptfunction()")

thanks in advance

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I don't think you can do that for items, but you can for the control...
lstBoxUsers.Attributes.Add("Onclick", "return javascriptfunction()")

e.g. test this:

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you should put the - onchange - event onto the <select>, instead of its child.

then in your javascript function just chk what's the selected value in the SELECT
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