function checkSkype() {
	var isSkype = false;
	var elements = document.getElementsByTagName("SPAN");
	var elements_count = elements.length;
	for (var i = 0; i < elements_count; i++) {
		s = elements.item(i).innerHTML;
		if (s.indexOf("SKYPE:SPAN") > 0) {
			isSkype |= true;
			break;
		}
	}
	return isSkype;
}