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())
	+ ";domain=.caiac.ca";
}

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)
    }
  }
}