var bufferImage = new Array();

function Buffer(filename) {
    var i = bufferImage.length;
    bufferImage[i] = new Image();
    bufferImage[i].src = filename;
}

Buffer("images/ico_mail_blu_big.png");
Buffer("images/next_blu_big.png");



//Abilitazione comando cambio stile e precaricam unico immagini solo per browsers != da Safari e Konqueror
function attcolor(){
	var str=navigator.appVersion;
	if(str.search("Safari")==-1 && str.search("Konqueror")==-1){
		nc = true; 
		document.getElementById("ico_color").style.display = "inline";
		
		if(document.cookie.indexOf("buffer=done")==-1){
			Buffer("images/ico_color_blu_big.png");
			Buffer("images/logo_org.png");
			Buffer("images/background_org.png");
			Buffer("images/bg_menu_bm_org.png");
			Buffer("images/bg_menu_org.gif");
			Buffer("images/c_org.gif");
			Buffer("images/ico_mail_org.png");
			Buffer("images/ico_color_org.png");
			Buffer("images/next_org.png");
			Buffer("images/rd_menu_dx_org.gif");
			Buffer("images/rd_menu_sx_org.gif");
			Buffer("images/ico_mail_org_big.png");
			Buffer("images/ico_color_org_big.png");
			Buffer("images/next_org_big.png");
			cookie_buffer("done");
		}
	}
}



function cookie_buffer(val){
	var expDays = 16;
	var exp = new Date(); 
	exp.setTime(exp.getTime() + (expDays*24*3600000));
	expdate=exp.toGMTString();
	document.cookie = "buffer ="+ val +"; expires ="+ expdate +";";
}
//Fine abilitazione



function color(){
	if(document.styleSheets){
		
		if(nc){
			document.styleSheets[1].disabled = true;
			document.styleSheets[2].disabled = false;
			nc = false;
		}
		else{
			document.styleSheets[1].disabled = false;
			document.styleSheets[2].disabled = true;
			nc = true;
		}


		if(document.cookie.indexOf("theme=orange")!=-1){
			cookie_theme("blue");
		}
		else{
			cookie_theme("orange");
		}
	}
}



function cookie_theme(val){
	var expDays = 16;
	var exp = new Date(); 
	exp.setTime(exp.getTime() + (expDays*24*3600000));
	expdate=exp.toGMTString();
	document.cookie = "theme ="+ val +"; expires ="+ expdate +";";
}