var TBshowCallout = false;

function TBcreateCookie(name,value,days) {
 if (days) {
	 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 toggleVisibility(id, NNtype, IEtype, W3Ctype) {
 if (document.getElementById) {
  eval("document.getElementById(id).style.visibility = \"" + W3Ctype + "\"");
 } else {
  if (document.layers) {
   document.layers[id].visibility = NNtype;
  } else {
   if (document.all) {
    eval("document.all." + id + ".style.visibility = \"" + IEtype + "\"");
	  }
	 }
 }
}

function hideSwf() {
 TBcreateCookie("tb_survey","1","120");
 if (document.getElementById) { // DOM3 = IE5, NS6 
  document.getElementById("survey").style.display = 'none';
 }
 else if (document.layers) { // Netscape 4
  document.survey.display = 'none';
 }
 else if (document.all) { // IE 4
  document.all.survey.style.display = 'none';
 }
}