// Declare variables
var expDays = 30;
var exp = new Date();

exp.setTime(exp.getTime() + (expDays*24*60*60*1000));


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;
}

function SetCookie (name, value){

	var argv = SetCookie.arguments;
	var argc = SetCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;

	document.cookie = name + "=" + escape (value) +
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
	((path == null) ? "" : ("; path=" + path)) +
	((domain == null) ? "" : ("; domain=" + domain)) +
	((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {

	var exp = new Date();
	exp.setTime (exp.getTime() - 1);

	var cval = GetCookie (name);
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function controlCookies(){
	
	// Get cookies
	var slideSection1 = GetCookie('slide_sec_1');
	var slideSection2 = GetCookie('slide_sec_2');
	
	// Control cookies
	if(slideSection1!=null){
		if(slideSection1=='set_2'){
			document.getElementById('slide1_1').style.display = 'block';
			document.getElementById('slide2_1').style.display = 'none';
			document.getElementById('slide1_1_1').style.backgroundImage='url(gfx/banner_arrow.gif)';
			document.getElementById('slide2_1_1').style.backgroundImage='url(gfx/banner_arrow_up.gif)';
		}else{
			document.getElementById('slide1_1').style.display = 'none';
			document.getElementById('slide2_1').style.display = 'block';
			document.getElementById('slide1_1_1').style.backgroundImage='url(gfx/banner_arrow_up.gif)';
			document.getElementById('slide2_1_1').style.backgroundImage='url(gfx/banner_arrow.gif)';
		}
	}
	if(slideSection2!=null){
		if(slideSection2=='set_2'){
			document.getElementById('slide3_1').style.display = 'block';
			document.getElementById('slide4_1').style.display = 'none';
			document.getElementById('slide3_1_1').style.backgroundImage='url(gfx/banner_arrow.gif)';
			document.getElementById('slide4_1_1').style.backgroundImage='url(gfx/banner_arrow_up.gif)';
		}else{
			document.getElementById('slide3_1').style.display = 'none';
			document.getElementById('slide4_1').style.display = 'block';
			document.getElementById('slide3_1_1').style.backgroundImage='url(gfx/banner_arrow_up.gif)';
			document.getElementById('slide4_1_1').style.backgroundImage='url(gfx/banner_arrow.gif)';
		}
	}

}