You can use a very simple script for that. Simply hook up to the onmouseover
events of the LinkButtons that represent the genres:
CommandArgument='<%# Eval("Key") %>'
onmouseover='this.className += " selected";'
onmouseout='this.className = this.className.split(" selected").join("");'>
<%# Eval("Key").ToString() == "" ? "Unsorted" : Eval("Key") %>
(<%# Eval("Value") %> items)
The above code adds the "selected
" CSS class to the links on mouse over and removes the same class on mouse out. The selected
CSS class is already defined in styles.css and it gives you the hover effect when dragging the tracks over the genres.
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