I am using WMS layer in my application and I need to display tooltip over my points. I want to use Extjs (Ext.ToolTip) but I am not sure how to get the right position of the tooltip. I see that there is showAt(x,y) method but don't know how to get x,y of each point. also I though of using the courser location but can't figure out how to do it exactly. any help regarding this?