function getCookie(c_name)
{
	if (document.cookie.length>0)
	  {
	  c_start=document.cookie.indexOf(c_name + "=");
	  if (c_start!=-1)
		{
		c_start=c_start + c_name.length+1;
		c_end=document.cookie.indexOf(";",c_start);
		if (c_end==-1) c_end=document.cookie.length;
		return unescape(document.cookie.substring(c_start,c_end));
		}
	  }
	return "";
}

function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

/*
function checkCookie()
{
	username=getCookie('username');
	if (username!=null && username!="")
	  {
	  alert('Welcome again '+username+'!');
	  }
	else
	  {
	  username=prompt('Please enter your name:',"");
	  if (username!=null && username!="")
		{
		setCookie('username',username,365);
		}
  }
}
*/