function setCookie(name,value,days)
 {if (days)
 {var date = new Date();
  date.setTime(date.getTime()+(days*24*60*60*1000));
  var expires = "; expires="+date.toGMTString();	}
 else var expires = "";
 document.cookie = name+"="+value+expires+"; path=/";}

function getCookie(name)
{var nameEQ = name + "=";
 var ca = document.cookie.split(';');
 for(var i=0;i < ca.length;i++)
	{var c = ca[i];
	 while (c.charAt(0)==' ') c = c.substring(1,c.length);
	 if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);}
	return null;}

function eraseCookie(name)
{getCookie(name,"",-1);}