function createCookie(name,value,days) {
	if (days=365) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}
function eraseCookie(name) {
	createCookie(name,"",-1);
}
var backColor = new Array("#000000", "#333333", "#666666", "#b3b3b3", "#660000", "#ffb366", "#006600", "#99ccff", "#cc99ff", "#ffccff", "#ff99cc", "#660033", "#7dafc6");
function changeBG(whichColor){
document.getElementById('main_color1').style.backgroundColor = backColor[whichColor];
document.getElementById('main_color2').style.backgroundColor = backColor[whichColor];
document.getElementById('main_color3').style.backgroundColor = backColor[whichColor];
 createCookie('backColor', whichColor);
}
if(readCookie('backColor'))
document.write('<style type="text/css" />.main_color1, .main_color2, .main_color3  {background-color: ' + backColor[readCookie("backColor")] + ';}<\/style>');