How to programmatically retrieve details from RTC using AJAX REST api with Authentication

If I point my browser to a url, it successfully displays the request REST info for an RTC work item.

I'd like to get the same info using an ajax call from a webpage on another server. However, when trying access I get errors.

The first step is to create a proxy on the webserver so it gets around the ajax x-domain limitation. I then have a webpage on this same webserver that makes an ajax call to another URL using the get URL function below.

However, it fails trying to display the jazz username/password screen and just continuously display s a "Loading..." message.

I've tried to include the username/password as part of the jax call, but that doesn't seem to bypass the Jazz authentication either.

function get_url( urlx ) {
 
		var username = "user123";
		var password = "password123";
 
		var txt = "";

    	$.ajax({
      		url: urlx,
      		type: "GET",
      		dataType: "text",
	  		async: false,
 
    		beforeSend: function (xhr){ 
        		xhr.setRequestHeader('Authorization', make_base_auth(username, password)); 
    		},
      		
			success: function(data){
				txt = data;
	 		},	
      		error: function(msg){
        
      		}    
    	});
 
		return txt; 
	

}