function runOnLoad(f) {
    	if (runOnLoad.loaded) f();    // If already loaded, just invoke f() now.
   	 	else runOnLoad.funcs.push(f); // Otherwise, store it for later
}
	
	runOnLoad.funcs = []; // The array of functions to call when the document loads
	runOnLoad.loaded = false; // The functions have not been run yet.
	
	// Run all registered functions in the order in which they were registered.
	// It is safe to call runOnLoad.run() more than once: invocations after the
	// first do nothing. It is safe for an initialization function to call
	// runOnLoad() to register another function.
	runOnLoad.run = function() {
		if (runOnLoad.loaded) return;  // If we've already run, do nothing
	
		for(var i = 0; i < runOnLoad.funcs.length; i++) {
			try { runOnLoad.funcs[i](); }
			catch(e) { /* An exception in one function shouldn't stop the rest */ }
		}
		
		runOnLoad.loaded = true; // Remember that we've already run once.
		delete runOnLoad.funcs;  // But don't remember the functions themselves.
		delete runOnLoad.run;    // And forget about this function too!
		
		
	};
	
	// Register runOnLoad.run() as the onload event handler for the window
	if (window.addEventListener)
		window.addEventListener("load", runOnLoad.run, false);
	else if (window.attachEvent) window.attachEvent("onload", runOnLoad.run);
	else window.onload = runOnLoad.run;