function randimg()
{
	var imgs = new Array(6);   // the number between brackets is the number of images you have, so change that whenever you add an image.
	
	for(i=0;i<imgs.length;i++) imgs[i] = new Image();  // telling each item in the imgs array to be a new image. never needs to change.
	
	imgs[0] = "teasers/neko.jpg";
	imgs[1] = "teasers/critic_mass.jpg";
	imgs[2] = "teasers/critic_mass2.jpg";
	imgs[3] = "teasers/surf_vs_sub.jpg";
	imgs[4] = "teasers/brand_new.jpg";
	imgs[5] = "teasers/zen_3sk.jpg";


	// you can add images by copying one of the above lines. 
	// change the number between brackets to whatever it is + 1 
	// (so in this case it'd be imgs[3]) and then link to the proper source.
	
	randimg = Math.floor(Math.random() * imgs.length);   // getting a random number in the range of the array length, doesn't need changing ever.

	document.images.teaser.src = imgs[randimg];   // loading in the image.
}