function getCookie(c_name) {
	var c_value = document.cookie;
	var c_start = c_value.indexOf(" " + c_name + "=");
	if (c_start == -1) {
	  c_start = c_value.indexOf(c_name + "=");
	  }
	if (c_start == -1) {
	  c_value = null;
	  }
	else {
	  c_start = c_value.indexOf("=", c_start) + 1;
	  var c_end = c_value.indexOf(";", c_start);
	  if (c_end == -1) {
	    c_end = c_value.length;
	    }
	  c_value = unescape(c_value.substring(c_start,c_end));
	  }
	return c_value;
}

function setCookie(cname, cvalue, exsecs) {
    var d = new Date();
    d.setTime(d.getTime() + (exsecs*1000));
    var expires = "expires="+d.toGMTString();
    document.cookie = cname + "=" + cvalue + "; " + expires +"; path=/";
}

function deleteCookie(c_name){
	document.cookie = c_name+"=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/";	
}