function addEvent(obj, evType, fn){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, true);
		return true;
	} else if (obj.attachEvent){
		var r = obj.attachEvent("on"+evType, fn);
		return r;
	} else {
		return false;
	}
}

function setTribalPos() {
	var agt=navigator.userAgent.toLowerCase();

	var ie=document.all&&navigator.userAgent.indexOf("Opera")==-1;
	var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

	var window_height = window.innerHeight;
	if(is_ie) {
		window_height = document.documentElement.clientHeight;
	}
	if((document.getElementById('homeTribal') != -1) && (document.getElementById('homeTribal') != null)) {
		if((window_height - 390) >= 433) {
			document.getElementById('homeTribal').setAttribute('id', 'tribalLargeScreen');
		}
	} else {
		if((window_height - 390) < 433) {
			document.getElementById('tribalLargeScreen').setAttribute('id', 'homeTribal');
		}
	}
}

addEvent(window, "load", setTribalPos);
addEvent(window, "resize", setTribalPos);