function setCookie(name, value){
	//alert("name : " + name + " | value : " + value);
	//If name is the empty string, it places a ; at the beginning
	//of document.cookie, causing clearCookies() to malfunction.
	if(name != ''){
		var exp = new Date();
		exp.setTime(exp.getTime() + (24*60*60*1000));
		//exp.setDay(exp.getDate() + 1);
		document.cookie = name + '=' + value + "; expires=" + exp;
	}
}

function getCookie(name){
	//Without this, it will return the first value 
	//in document.cookie when name is the empty string.
	if(name == ''){
		return('aa');
	}

	name_index = document.cookie.indexOf(name + '=');

	if(name_index == -1){
		return('');
	}

	cookie_value =  document.cookie.substr(name_index + name.length + 1, document.cookie.length);

	//All cookie name-value pairs end with a semi-colon, except the last one.
	end_of_cookie = cookie_value.indexOf(';');
	if(end_of_cookie != -1)
	cookie_value = cookie_value.substr(0, end_of_cookie);

	//Restores all the blank spaces.
	space = cookie_value.indexOf('+');
	while(space != -1)
	  { 
	  cookie_value = cookie_value.substr(0, space) + ' ' + 
	  cookie_value.substr(space + 1, cookie_value.length);
					 
	  space = cookie_value.indexOf('+');
	  }
	return(cookie_value);
}

function clearCookie(name)
         {                  
         expires = new Date();
         expires.setYear(expires.getYear() - 1);

         document.cookie = name + '=null' + '; expires=' + expires; 		 
         }
         
function clearCookies()
         {
         Cookies = document.cookie;
         Cookie = Cookies;
         expires = new Date();
         expires.setYear(expires.getYear() - 1);

         while(Cookie.length > 0)
              {
              //All cookie name-value pairs end with a semi-colon, except the last one.
              Cookie = Cookies.substr(0, Cookies.indexOf(';'));
              Cookies = Cookies.substr(Cookies.indexOf(';') + 1, Cookies.length);

              if(Cookie != '')
                 document.cookie = Cookie + '; expires=' + expires;
              else
                 document.cookie = Cookies + '; expires=' + expires;			  			  	  
              }		 		 
         }