How to add Lync web resource to call using odata funtion in the javascript

function callLyncNumber(phoneFieldName) {

   var phoneField = document.getElementById(phoneFieldName);  

   phoneField.style.textDecoration = "underline";

   phoneField.style.color = "blue";

   phoneField.ondblclick = function () { if  (phoneField.value != null && phoneField.value != "") { window.open("tel:" + phoneField.value); } };

}

I want to use this javascript to call the phone no in this tel is area code of the country where i want to call so plz help in finding the webresource i can add in the crm ifram for the same java =script can work