function color(){
var favColor = GetCookie('proffe');
if (favColor == null) {
favColor = '#000066';
}
	if (favColor=='#000000' || favColor=='#666666' || favColor=='#111111')
	{	if (favColor=='#000000')
		document.body.background ="../immagini/nuvole.jpg";
		if (favColor=='#666666')
		document.body.background ="../immagini/par.jpg";
		if (favColor=='#111111')
		document.body.background ="../immagini/vel.jpg";
	}
	else{
	document.body.background =null;
	document.bgColor=favColor;
	}
return favColor;
}
function getCookieVal (offset) {  
var endstr = document.cookie.indexOf (";", offset);  
if (endstr == -1)    
endstr = document.cookie.length;  
return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {  
var arg = name + "=";  
var alen = arg.length;  
var clen = document.cookie.length;  
var i = 0;  
while (i < clen) {    
var j = i + alen;    
if (document.cookie.substring(i, j) == arg)      
return getCookieVal (j);    
i = document.cookie.indexOf(" ", i) + 1;    
if (i == 0) break;   
}  
return null;
}