var amount= 30; 
var link = new Array(); 
var i; 
i=Math.ceil(Math.random()*amount); 

document.write('<center><table width="90" height="90" border="0" cellspacing="0" cellpadding="1"><tr><td valign="top" bgcolor="#007D00"><table width="100%" height="100%" border="0" cellspacing="0" cellpadding="0" bgcolor="#F3FFEF"><tr><td><a href="http://www.bezproblem.com/" target="_blank"><img src="http://www.bezproblem.org/bezproblem/'+i+'.jpg"  border="0"></a></td></tr></table></td></tr></table><a href="http://www.bezproblem.com/" target="_blank">Купить!</a></center>');