function SetCookie(name, value, hours) {
  		var expire = "";
  		if(hours != null) {
    		expire = new Date((new Date()).getTime() + hours * 3600000);
    		expire = "; expires=" + expire.toGMTString();
  		}
  		document.cookie = name + "=" + escape(value) + expire;
	}

	// get a cookie
function GetCookie(name) {
		var cookieValue = "";
  		var search = name + "=";
  		if(document.cookie.length > 0) { 
    		offset = document.cookie.indexOf(search);
    		if (offset != -1) { 
      			offset += search.length;
      			end = document.cookie.indexOf(";", offset);
     			if (end == -1) end = document.cookie.length;
      			cookieValue = unescape(document.cookie.substring(offset, end));
    		}
  		}
  		return cookieValue;
	}