Iphone cards required

I need help. I saw one myhomes app for iphones. the link for this app is at myhomes.com. they use a map that has markers, when you click on a marker, one button is displayed (this is really what for me how to use a button in lens c when we click on a marker in a webview because we can use javascript there). which redirects to another screen that displays details of this event. I want to use this kind of functionality in my code. they can use some api. I am very angry to know how they do it. rite now i am showing map with javascript google map and showing pop when we click on marker. but this popup is not clickable as it is html type. how can i put a button in my uiview at the same place,where is my marker? how to combine target c with javascript? I know most developers can know this. try to help me. this will be a great appraisal.

hope to find answers ... thanks a lot