function getExpiryDate(){
	var date = new Date();
	date.setTime(date.getTime()+(730*24*60*60*1000));
	return date;
}
function setYellow() {
	var expires = getExpiryDate();
	document.cookie = "dd_color=Y; path=/" + ((expires == null) ? "" : "; expires=" + expires.toGMTString());
}
function setGreen() {
	var expires = getExpiryDate();
	document.cookie = "dd_color=G; path=/" + ((expires == null) ? "" : "; expires=" + expires.toGMTString());
}
function setBlue() {
	var expires = getExpiryDate();
	document.cookie = "dd_color=B; path=/" + ((expires == null) ? "" : "; expires=" + expires.toGMTString());
}
function setPink() {
	var expires = getExpiryDate();
	document.cookie = "dd_color=P; path=/" + ((expires == null) ? "" : "; expires=" + expires.toGMTString());
}
function setRed() {
	var expires = getExpiryDate();
	document.cookie = "dd_color=R; path=/" + ((expires == null) ? "" : "; expires=" + expires.toGMTString());
}