function getCookie(name)
{
	var nameOfCookie = name + "=";
	var x = 0;

	while (x <= document.cookie.length)
	{
		var y = (x+nameOfCookie.length);
		
		if (document.cookie.substring (x, y) == nameOfCookie)
		{
			if ((endOfCookie = document.cookie.indexOf (";", y)) == -1)
			endOfCookie = document.cookie.length;
			return unescape (document.cookie.substring(y, endOfCookie));
		}

		x = document.cookie.indexOf (" ", x) + 1;

		if (x == 0) break;
	}
	
	return "";
}

function setCookie(name,value,expiredays)
{
	var todayDate = new Date(); 
	todayDate.setDate( todayDate.getDate() + expiredays ); 
	document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";" 
}

function delCookie(obj,name,value,day)
{
	getObj=eval(obj+".style");
	
	setCookie(name,value,day);
	getObj.visibility="hidden";
}