// JavaScript Document

//restrict form fields to only accpet digits
function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;

      }




function navBack(){
	window.history.back();
}

function winClose(){
	window.close();
}

function toggleContent (ID){
	//alert(ID+"  "+navigation_list[1]);
	try{
		for (ii=0; ii<navigation_list.length; ii++){
			if (navigation_list[ii]!=ID){
				document.getElementById(navigation_list[ii]).style.display='none';
			}
		}
		document.getElementById(ID).style.display = 'block';
			
	} catch(e){}
}



function toggleEmailFriend() {
	
  try{	
  
		if (document.getElementById('emailFriend').style.display!='block'){
				document.getElementById('emailFriend').style.display='block';
				document.getElementById('to').value = 'Enter Friends Email Address Here';
				document.getElementById('emailBody').value = 'Take a look at the Halo Swim Training System web site: http://www.haloswimtraining.com. The system is built to train and condition three key elements of competetive swimming:High Elbow Catch, Power Stroke Path, and Race Pace Tempo.';
				document.getElementById('to').focus();
				document.getElementById('to').select();
		}else{ 
			document.getElementById('emailFriend').style.display='none';
			}
	} catch(e){}
}


function sendMail(mailingType)
{
    try {	
	if (mailingType == 'order')
	{
			alert('sendMail\(order\) is disabled');
	}
	else if (mailingType == 'friend')
	{
			document.friend.action ='/mailer.php';
			document.friend.subject.value = 'Halo Swim Training System - http://www.haloswimtraining.com';
			document.friend.from.value = 'craig@lanegainer.com';
			document.friend.submit();
	}
	else
	{
			alert('bad parameter to sendMail\(\)');
	}
	document.getElementById('emailFriend').style.visibility = 'hidden';
    } catch(e){}
}


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_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_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];}
}