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

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 null
}


function hasCookie() {
	visit=getCookie('visit')
	if (visit!=null)	{
		return true
	}
	else {
		setCookie('visit','1',1)
		return false
	}
}