scroll multiselect in extjs

Question

hi everyone

I have a multiselect component in Ext js 3. I have a number of entries in it. Now i want to select an entry and scroll multiselect to make it visible to the user. I am able to select an entry but i cannot scroll multiselect.

I have used dataview component and i do this same function using following: dataviewObj.container.dom.scrollTop = (42 * index);

but cannot implement this is multiselect.

Can someone please tell me how to achieve this with multiselect????

Thank you alot...regards