Thanks for the reply mate. Even i found ways to raise event once a particular item is selected. But there must be "some" way to work upon a particular item , on the basis of mouseover event on a particular item. The comboBox must be selected indeed, but when its opened, then i want to raise event on "each" item within it as the mouce is moved over it. [What all i am looking for] One may notice that even the browser internally raises some event as the mouse is moved over the items. Since the item under the mouse is displayed in different color. There must be something like that in javascript as well.