function getExpDate(days, hours, minutes) {
	    var expDate = new Date( );
	    if (typeof days == "number" && typeof hours == "number" && 
	        typeof hours == "number") {
	        expDate.setDate(expDate.getDate( ) + parseInt(days));
	        expDate.setHours(expDate.getHours( ) + parseInt(hours));
	        expDate.setMinutes(expDate.getMinutes( ) + parseInt(minutes));
	        return expDate.toGMTString( );
	    }
	}
	   
	// utility function called by getCookie( )
	function getCookieVal(offset) {
	    var endstr = document.cookie.indexOf (";", offset);
	    if (endstr == -1) {
	        endstr = document.cookie.length;
	    }
	    return unescape(document.cookie.substring(offset, endstr));
	}
	   
	// primary function to retrieve cookie by name
	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 "";
	}
	   
	// store cookie value with optional details as needed
	function setCookie(name, value, expires, path, domain, secure) {
	    document.cookie = name + "=" + escape (value) +
	        ((expires) ? "; expires=" + expires : "") +
	        ((path) ? "; path=" + path : "") +
	        ((domain) ? "; domain=" + domain : "") +
	        ((secure) ? "; secure" : "");
	}
	   
	// remove the cookie by setting ancient expiration date
	function deleteCookie(name,path,domain) {
	    if (getCookie(name)) {
	        document.cookie = name + "=" +
	            ((path) ? "; path=" + path : "") +
	            ((domain) ? "; domain=" + domain : "") +
	            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	    }
	}
	
	function openNoticeLayer(name) { 
		var noticeCookie=getCookie(name);  
		if (noticeCookie != "no") {
			document.getElementById(name).style.display = "block";
		}
	}

	function closeNoticeLayer(name) {
		document.getElementById(name).style.display = "none";
		var todayDate = new Date(); 
		todayDate.setDate( todayDate.getDate() + 1 ); 
		todayDate.setHours(0);
		todayDate.setMinutes(0);
		setCookie(name, "no" ,todayDate.toGMTString());   
	}