function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {  // if window.onload has already happened
		window.onload = func;
	} else { // if it's our FIRST function (window not yet loaded)
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function greeting()
{
	helixtime = new Date()
	hrstime = helixtime.getHours()
					
		if (hrstime < 7)
		{document.write('<h2>An EARLY good morning and welcome</h2>')}
		if (hrstime > 6 && hrstime <12)
		{document.write('<h2>Good morning and welcome</h2>')}
		if (hrstime > 11 && hrstime <18)
		{document.write('<h2>Good afternoon and welcome</h2>')}
		if (hrstime >17)
		{document.write('<h2>Good evening and welcome</h2>')}
}