function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function LvlProcessDelay(image){
setTimeout("MM_showHideLayers('sub1','','hide','closer','','hide');MM_swapImage('arrow','','"+image+"',1)",1000);
}

function setClass(el,newClass){
el.className=newClass;
}

function Theatre( daLink ) {
	var comwin = window.open(daLink,'Help','width=566,height=354,scrollbars=no,resize=no');
    comwin.focus() ;
}


/* -- Common functions -- */

function xGetElementById(e)
{
	if(typeof(e)!='string') return e;
	if(document.getElementById) e=document.getElementById(e);
	else if(document.all) e=document.all[e];
	else e=null;
	return e;
}

function checkUrl(url)
{
	if ( (url.indexOf('http://') != -1) || (url.indexOf('https://') != -1) ) return true;
	else return false;
}

function isValidEmail(strEmail){
  validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
  strEmail = document.forms[0].email.value;

   // search email text for regular exp matches
    if (strEmail.search(validRegExp) == -1) 
   {
      return false;
    } 
    return true; 
}



function checkBookingForm()
{
	var name = xGetElementById("name");	
	var organization = xGetElementById("organization");
	var location = xGetElementById("location");
	var contact_person = xGetElementById("contact_person");
	var city = xGetElementById("city");
	var state = xGetElementById("state");
	var phone = xGetElementById("phone");
	var capacity = xGetElementById("capacity");
	var email = xGetElementById("email");
	
	errors = "";
	
	if ( name.value.length < 3 ) errors += "Name is too short\n";
	if ( organization.value.length < 1 ) errors += "Organization is too short\n";
	if ( location.value.length < 3 ) errors += "Venue Location is too short\n";
	if ( contact_person.value.length < 1 ) errors += "Contact Person is too short\n";
	if ( city.value.length < 1 ) errors += "City is too short\n";
	if ( state.value.length < 1 ) errors += "State is too short\n";
	if ( phone.value.length < 1 ) errors += "Phone Number is too short\n";
	if ( capacity.value.length < 1 ) errors += "Capacity is too short\n";
	if ( email.value.length < 1 || isValidEmail(email.value) == false) errors += "Email Address is not correct\n";
	
	if (errors.length == 0) {
		document.forms[0].submit();
	} else {
		alert(errors);
	}
}

function checkContactForm()
{
	var name = xGetElementById("name");	
	var email = xGetElementById("email");
	
	errors = "";
	
	if ( name.value.length < 3 ) errors += "Name is too short\n";
	if ( email.value.length < 1 || isValidEmail(email.value) == false) errors += "Email Address is not correct\n";
	
	if (errors.length == 0) {
		document.forms[0].submit();
	} else {
		alert(errors);
	}
}