var theImages = new Array() 
		theImages[0] = '../includes/images/home_1.jpg'
		theImages[1] = '../includes/images/home_2.jpg'
		theImages[2] = '../includes/images/home_3.jpg'
		theImages[3] = '../includes/images/home_4.jpg'

		var j = 0
		var p = theImages.length;
		var preBuffer = new Array()
		
		for (i = 0; i < p; i++){
	   		preBuffer[i] = new Image()
	   		preBuffer[i].src = theImages[i]
		}
	
		var whichImage = Math.round(Math.random()*(p-1));
		
		function showImage(){
			document.write('<img border=1 src="'+theImages[whichImage]+'">');
		}