function addBehavior() {
	document.getElementById("launchmusicplayer").onclick = function() {
		var musicplayer = window.open('/musicplayer','musicplayer','width=334,height=184,toolbar=0,resizable=0');
		return false;
	}
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

addLoadEvent(addBehavior);