function showContactUs(){
  document.getElementById('links').style.display = 'none';
  document.getElementById('contactus').style.display = 'inline';
}

function showLinks(){
  document.getElementById('contactus').style.display = 'none';
  document.getElementById('links').style.display = 'inline';
}

function setSiteMode(value,expiredays) {
  var exdate=new Date();
  exdate.setDate(exdate.getDate()+expiredays);
  document.cookie=siteMode+ "=" +escape(value)+
  ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function checkMobile() {
  if(getSiteMode() == desktop ) {
    window.location = 'http://towinginchicago.com/index.php';
  } else if((screen.width*screen.height)<300000) {
    window.location = 'http://towinginchicago.com/mobile.php';
  }
}

function getSiteMode() {
  if (document.cookie.length>0)
    {
    c_start=document.cookie.indexOf(siteMode + "=");
    if (c_start!=-1) {
      c_start=c_start + c_name.length+1;
      c_end=document.cookie.indexOf(";",c_start);
      if (c_end==-1) c_end=document.cookie.length;
      return unescape(document.cookie.substring(c_start,c_end));
      }
    }
  return "";
}

function gotoDesktopMode() {
  setSiteMode('desktop',365);
  window.location = 'http://towinginchicago.com/index.php';
}