window.onload=banner;

function banner() {
	img = new Array(); 
	img[0] = '<a target="_blank" href="http://topmp3.pl"><img border="0" alt="reklama" id="ads_content" src="http://pliczek.net/images/topmp3_750x100.gif"/></a>';
	img[1] = '<a target="_blank" href="http://multifinder.pl"><img border="0" alt="reklama" id="ads_content" src="http://theprisonbreak.net/images/750x100multifinder.jpg"/></a>';

	index = Math.floor(Math.random() * img.length); 
	document.getElementById('banner-750x100').innerHTML = img[index];
}