function setCookie(name, value, expires) {
	document.cookie = name + "=" + escape(value) +";expires=" + expires.toGMTString() + "; path=/";
}	

function getCookie(name) {
	var dcookie = document.cookie;
	var cname = name + "=";
    var clen = dcookie.length;
   	var cbegin = 0;

   	while (cbegin < clen) {
        var vbegin = cbegin + cname.length;
   	    	if (dcookie.substring(cbegin, vbegin) == cname) { 
       	    var vend = dcookie.indexOf (";", vbegin);
            	if (vend == -1) vend = clen;
           	return unescape(dcookie.substring(vbegin, vend));
        	}
       	cbegin = dcookie.indexOf(" ", cbegin) + 1;
        	if (cbegin == 0) break;
    }
    return null;
}
		
function delCookie (name) {
    document.cookie = name + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT" + "; path=/";
}

function checkCookie() {
	alert(document.cookie);
}