var nbimage= 40;
var width;
var height;
var url;
var alte;
function banniere()
{
numimage= Math.round(Math.random()*(nbimage-1)+1);
if (numimage <= 10)
{
gotosite = "";
url = "IMG/accueil_one.jpg";
alte = "Surtainville";
}
if (numimage > 10 && numimage <= 20)
{
gotosite = "";
url = "IMG/accueil_two.jpg";
alte = "Surtainville";
}
if (numimage > 20 && numimage <= 30)
{
gotosite = "";
url = "IMG/accueil_three.jpg";
alte = "Surtainville";
}
if (numimage > 30 && numimage <= 40)
{
gotosite = "";
url = "IMG/accueil_four.jpg";
alte = "surtainville";
}
if (numimage > 40 && numimage <= 50)
{
gotosite = "";
url = "IMG/accueil_five.jpg";
alte = "surtainville";
}
if(gotosite != "")
	{
	document.write ('<A HREF="' + gotosite + '">');	
	}
document.write('<IMG SRC="' + url + '" ALT="' + alte + '" BORDER=0>')
if(gotosite != "")
	{
	document.write('</A>')
	}
}