function TODcss(){
    datetoday = new Date();
    timenow=datetoday.getTime();
    datetoday.setTime(timenow);
    thehour = datetoday.getHours();
    if (thehour > 18) {
        display = "http://commoncontent.letsfeelgreat.co.uk/styles/backgrounds/Background_night.css";
    }
    else if (thehour > 15) {
        display = "http://commoncontent.letsfeelgreat.co.uk/styles/backgrounds/Background_evening.css";
    }
    else if (thehour > 10) {
        display = "http://commoncontent.letsfeelgreat.co.uk/styles/backgrounds/Background_lunchtime.css";
    }
    else if (thehour > 5) {
        display = "http://commoncontent.letsfeelgreat.co.uk/styles/backgrounds/Background_morning.css";
    }
    else {
        display = "http://commoncontent.letsfeelgreat.co.uk/styles/backgrounds/Background_morning.css";
    }
    var headID = document.getElementsByTagName("head")[0];
    var cssNode = document.createElement('link');
    cssNode.type = 'text/css';
    cssNode.rel = 'stylesheet';
    cssNode.href = display;
    cssNode.media = 'screen';
    headID.appendChild(cssNode);
}