function set_cookie(name, val, max_age)
{
    document.cookie = name + "=" + encodeURIComponent(val) + "; max-age=" + max_age + "; path=/";	// max-age is in sec - blank = end of session
}

function get_cookie(name)
{
	if (document.cookie.length > 0)
	{
		var beg = document.cookie.indexOf(name + "=");
	 
		if (beg != -1)
		{
			beg += name.length + 1;
			var end = document.cookie.indexOf(";", beg);
	   
			if (end == -1)
				end = document.cookie.length;
	   
			return unescape( document.cookie.substring(beg, end) );
		}
	}
	return "";	
}

function delete_cookie (name)
{
	set_cookie(name, 0, 0);
}


function addToCart(productName)
{
	var numDrivers = Number( get_cookie(productName) );
	set_cookie(productName, numDrivers+1);
}

function updateCart()
{
	var cartContents = "";

	var numDrivers = get_cookie('cLemurMonitorsEcono');
	if (numDrivers != null && numDrivers != 0)
		cartContents += "<input type='text' style='width: 16px' onchange=\"set_cookie('cLemurMonitorsEcono', Number(this.value));  updateCart()\" value='" +  numDrivers + "' /> <img src='images/EconoCartLogo.png' alt='EconoDriver' style='position: relative; top: 5px' /> $" + decipher(pEcono) + " ea<br />";

	numDrivers = get_cookie('cLemurMonitorsSafe');
	if (numDrivers != null && numDrivers != 0)
		cartContents += "<input type='text' style='width: 16px' onchange=\"set_cookie('cLemurMonitorsSafe', Number(this.value));  updateCart()\" value='" +  numDrivers + "' /> <img src='images/SafeCartLogo.png' alt='SafeDriver' style='position: relative; top: 5px' /> $" + decipher(pSafe) + " ea<br />";

	numDrivers = get_cookie('cLemurMonitorsAlert');
	if (numDrivers != null && numDrivers != 0)
		cartContents += "<input type='text' style='width: 16px' onchange=\"set_cookie('cLemurMonitorsAlert', Number(this.value));  updateCart()\" value='" +  numDrivers + "' /> <img src='images/AlertCartLogo.png' alt='AlertDriver' style='position: relative; top: 5px' /> $" + decipher(pAlert) + " ea<br />";

	if(!cartContents)
		cartContents = "<i>Your Cart is Empty</i>";

	document.getElementById('cartContents').innerHTML = cartContents;
}