JavaScript - DOM Ready

gistfile1.js

//
// Works in Chrome, Firefox, MSIE, Opera and Safari.
//
function onDOMContentLoaded( event ) {
	if( event ) {
		document.removeEventListener( event.type, onDOMContentLoaded, false );
	}
	document.onreadystatechange = null;
	// do something here...
}
if( document.addEventListener ) {
	document.addEventListener( "DOMContentLoaded", onDOMContentLoaded, false );
}
document.onreadystatechange = function() {
	if( document.readyState == "complete" ) {
		onDOMContentLoaded( null );
	}
}