function banner() 
{ 

total=2; 
banner = Math.floor(Math.random() * total); 

switch(banner) 
{ 
case 0: 
document.write("<A HREF='http://www.funof1.com.ar' TARGET='_blank'><IMG SRC='banners/Funo.gif' WIDTH='468' HEIGHT='60' BORDER='0'></A>"); 
break;
case 1:
document.write("<A HREF='http://www.md-informatica.com' TARGET='_blank'><IMG SRC='banners/Mdin.gif' WIDTH='468' HEIGHT='60' BORDER='0'></A>"); 
break;
}

}