window.onload = choosePic;

var myPix = new
Array("images/random_js/gina_in_snow.jpg","images/random_js/kitty_gina.jpg","images/random_js/gina_july_2009.jpg","images/random_js/gina_on_grass.jpg","images/random_js/gina_july_2009_zoom.jpg");

function choosePic() {
	randomNum = Math.floor((Math.random() * myPix.length));
	document.getElementById("myPicture").src = myPix[randomNum];
}