//music controls
function play(tid) {
	sound.stop();
	url = 'mp3/' + tid + '.mp3';
	sound.loadSound(url,true);
} 
function stopplay() {
	sound.stop();
}
//gotempo
function gotempo() {	
	var dropdownIndex = document.getElementById('tempo').selectedIndex;
	if (document.getElementById('tempo')[dropdownIndex].value == '0') {	alert('Please select a tempo'); } else {
		document.tempofrm.submit();
	}	
}
<!--
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];}
}
//-->
//checkpay
function checkpay() {	
	if (document.getElementById('confirm').checked) {
		document.form2.submit();
	} else {
		alert("Please confirm you agree with the terms and conditions");
	}
}
//login
function login() {		
		errormsg = "";		
	    if (document.getElementById('email').value == "") { errormsg += "Please enter your email\n"; }
		if (document.getElementById('pwd').value == "") { errormsg += "Please enter your password\n"; }	
		var emailID=document.loginform.email
		if (echeck(emailID.value)==false){ errormsg += "Invalid email address.\n"; }		
		if (errormsg == "") {		
			document.loginform.submit();		
		} else {		
			alert(errormsg);		
		}
}
// form validation
function joinup() {		
		errormsg = "";		
	    if (document.getElementById('fname').value == "") { errormsg += "Please enter your first name\n"; }
		if (document.getElementById('lname').value == "") { errormsg += "Please enter your surname\n"; }
		if (document.getElementById('jpwd').value == "") { errormsg += "Please create a password.\n"; }	
		if (document.getElementById('jemail').value !== document.getElementById('email2').value) { errormsg += "Email addresses do not match.\n"; }	
		var emailID=document.joinform.jemail
		if (echeck(emailID.value)==false){ errormsg += "Invalid email address.\n"; }		
		if (errormsg == "") {		
			document.joinform.submit();		
		} else {		
			alert(errormsg);		
		}
}
function updateme() {		
		errormsg = "";		
	    if (document.getElementById('fname').value == "") { errormsg += "Please enter your first name\n"; }
		if (document.getElementById('lname').value == "") { errormsg += "Please enter your surname\n"; }
		if (document.getElementById('jpwd').value == "") { errormsg += "Please create a password.\n"; }	
		var emailID=document.joinform.jemail
		if (echeck(emailID.value)==false){ errormsg += "Invalid email address.\n"; }		
		if (errormsg == "") {		
			document.joinform.submit();		
		} else {		
			alert(errormsg);		
		}
}
//
function echeck(str) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}
	 if (str.indexOf(at,(lat+1))!=-1){
		return false
	 }
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	 }
	if (str.indexOf(dot,(lat+2))==-1){
	   return false
	}
	if (str.indexOf(" ")!=-1){
	   return false
	}
	return true					
}