var imm = new Array();
imm[0] = "banner/banner1.gif";
imm[1] = "banner/banner2.gif";
imm[2] = "banner/banner3.jpg";
imm[3] = "banner/banner4.png";
imm[4] = "banner/banner5.png";
imm[5] = "banner/banner6.png";

var lnk = new Array();
lnk[0] = "images/duomo.gif";
lnk[1] = "http://www.scapiniufficio.it"
lnk[2] = "http://www.aquadulsa.com"
lnk[3] = "images/banner4.png"
lnk[4] = "images/banner5.png"
lnk[5] = "images/banner6.png"


var x = 0;

/*var mostra = document.getElementById("banner");*/

function mostra_banner()
{
    mostra = document.getElementById("banner");
	mostra.innerHTML = "<a href='" + lnk[x]  + "' target='_blank'><img src='" + imm[x] + "' border='0'></a>";
    window.setTimeout("mostra_banner()", 5000);
    imm.length - 1 == x ? x = 0 : x++;
}