function getCookieVal(offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if(endstr == -1)
	  endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}

function FixCookieDate(date) {
	var base = new Date(0);
	var skew = base.getTime();						//dawn of Unix time - should be 0
	if(skew > 0){
	  date.setTime(date.getTime() - skew);		//except for Macs - ahead of its time
	}
}

function GetCookie(name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while(i < clen) {
		var j = i + alen;
		if(document.cookie.substring(i,j) == arg)
		  return getCookieVal(j);
		   i = document.cookie.indexOf(" ", i) + 1;
		if(i == 0) { break; }
	}
	return null;
}

function SetCookie(name, value, expires,path,domain,secure) {
	document.cookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path :"") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : "");
}

function DeleteCookie(name,path,domain) {
	if(GetCookie(name)) {
		document.cookie = name + "=" + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

function choose_trading_account(select_ref) {
	var account = select_ref.value;

	var expdate = new Date();
	FixCookieDate(expdate);														 //fix date for Macs
	expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000));     //24 hours from now
	SetCookie("sim_account",account,expdate,"/");
}