/*COOKIES*/
function checkCookiesEnabled() {
	alert(navigator.cookieEnabled)
	//alert("cookie: " + document.cookie)
	//alert("cookie.length: " + document.cookie.length)
}
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 setCookie(c_name,value,expiredays) {
	var exdate=new Date()
	exdate.setTime(exdate.getTime()+(expiredays*24*3600*1000))
	document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : "; expires="+exdate)
}

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