InfoWindow transparent graphic for tooltips

Discussion created by VBAHole on Nov 26, 2012
I am using an InfoWindow to show tooltips when a user hovers over point features in my DynamicMapServiceLayer. it is working fine but i don't want the graphic involved with it.
When my app loads i query the dynamic layer and create graphics to handle the mouseOver and show the tooltip. The problem is i don't want to see those graphics, i want to see the renderer that i have for my layer.
But if i remove the setSymbol call to the graphics layer then i don't get the tooltip hover action.
Do i have to make a blank renderer? How can i do that?