Salesforce.com - Asterisk Pbx integration ( Working with MAC )

I need a developer to do the following. Project description: We need an application that Works in MAC ( could be native MAC App or realtime Web app ). We have an Asterisk 1.8 server with 8 agents, 4 rdsi , 8 channels. The objective is integrate an application that popups a window or dhtml popup with the information of the caller getting this information from our cloud CRM Salesforce.com . The Popup have to permit : - See the caller information. - Answer the Call - Hang up the Call - Transfer the call to another agent. Is important that this application works in MAC, because the agents use MAC. You can use the techonolgy you want to do this: Asterisk AMI, Asterisk AGI NODE.js , etc. We need a click2Call too. In short something like InGenius CTI connector but It will work on Mac OS . ( Desktop Application or preferably AJAX Node.js-Socket.io Realtime WebApp ) You should send me a budget with you propose. Thank you.