var preloaded = new Array();

function preload_images() {
	
    for (var i = 0; i < arguments.length; i++){
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src',arguments[i]);
    };
};

preload_images(
	'pics/pasi_iso.gif',
	'pics/hannu_iso.gif',
	'pics/kimmo_iso.gif',
	'pics/maria_iso.gif',
	'pics/marjut_iso.gif',
	'pics/hanna_iso.gif',
	'pics/samuli_iso.gif'

);


	
function change(pic)
{
	document.getElementById('big').src = pic;
}