var pre = '<a href="search_charity.html"><img id="logos" name="Organization Logos" ';
var pst = ' border="0"></a>';

var mess = new Array(
pre + 'src="siteimages/logos1.gif"' + pst,
pre + 'src="siteimages/logos2.gif"' + pst,
pre + 'src="siteimages/logos3.gif"' + pst,
pre + 'src="siteimages/logos4.gif"' + pst,
pre + 'src="siteimages/logos5.gif"' + pst,
pre + 'src="siteimages/logos6.gif"' + pst,
pre + 'src="siteimages/logos7.gif"' + pst,
pre + 'src="siteimages/logos8.gif"' + pst,
pre + 'src="siteimages/logos9.gif"' + pst,
pre + 'src="siteimages/logos10.gif"' + pst);

var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);