How to detect Chat Widget in Visualforce page?

Question

Is there a way to systematically check to see if the Chat Widget will be present in a Visualforce page?

I say "will be" present as the html elements are not present on load so you can't check to see if these elements exists on page load. Is there any JavaScript variable or salesforce.com provided method/merge field to determine if Chat is turned on?

Answer 1

Not ideal but this is what I ended up doing. Calls a function every 50ms after page load for 2 seconds to check for existence of the chat DOM elements.

window.onload = function(){
    //Kick of script that checks for chat widget
    checkForChatWidget(0);
}

function checkForChatWidget(numberOfChecks){
    //Check to see if the chat widget exists
    if(jQuery("#presence_widget").length > 0){
        //Widget loaded, put logic here

    }else if(numberOfChecks < 40){ //If number of checks is greater that 40 (2000ms), stop checking
        setTimeout(function(){
            checkForChatWidget(numberOfChecks + 1);
        },50);
    }
}