// North Harbour Big Tree Co JavaScript
// Created 10/07/2003
// Author Jeff Butler

// Add update notes here:

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) { //v4.0
  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 && document.getElementById) x=document.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_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function openWindow(theURL,winName,features) {
  	window.open(theURL,winName,features);
}

function jump(sel) {
	var url = sel.options[sel.selectedIndex].value;
	if ( url != '#' ) top.location = url;
}

function checkForm(){
	if (document.bigtree_form.name.value == "") {
		alert("please enter your name."); 
		document.bigtree_form.name.focus();
	} else if (document.bigtree_form.email.value == "") {
		alert("please enter your email address."); 
		document.bigtree_form.email.focus();
	} else if(null == document.bigtree_form.email.value.match(/[a-zA-Z0-9._]+@[a-zA-Z0-9.-_]+/)) {
		alert("please enter a valid email address."); 
		document.bigtree_form.email.focus();
	} else if (document.bigtree_form.comments.value == "") {
		alert("please enter your comments."); 
		document.bigtree_form.comments.focus();
	} else {
	document.bigtree_form.action="mail.php";
	document.bigtree_form.submit();
	}
}

function checkSignup(){
	if (document.bigtree_mailing_list.name.value == "") {
		alert("please enter your name."); 
		document.bigtree_mailing_list.name.focus();
	} else if (document.bigtree_mailing_list.email.value == "") {
		alert("please enter your email address."); 
		document.bigtree_mailing_list.email.focus();
	} else if(null == document.bigtree_mailing_list.email.value.match(/[a-zA-Z0-9._]+@[a-zA-Z0-9.-_]+/)) {
		alert("please enter a valid email address."); 
		document.bigtree_mailing_list.email.focus();
	} else {
	document.bigtree_mailing_list.action="mailing_list.php";
	document.bigtree_mailing_list.submit();
	}
}

function checkKeyword(){
	if (document.bigtree_search.keyword.value == "") {
		alert("please enter a search keyword."); 
		document.bigtree_search.keyword.focus();
	} else {
	document.bigtree_search.action="search.php";
	document.bigtree_search.submit();
	}
}

function printPage() {
  if (window.print)
    window.print()
  else
    alert("Sorry, your browser doesn't support this feature.");
}

function display( id, value )
{
    if ( document.getElementById )
    {
        document.getElementById( id ).style.display = value;
    }
    else if ( document.all )
    {
        document.all[ id ].style.display = value;
    }
}

function hide( id )
{
    display( id, 'none' );
}

function show( id )
{
    display( id, 'block' );
}

function createParam(name, value) {
  var p = document.createElement("param");
  p.name=name;
  p.value=value;
  return p;
 }

function flash( url, parentId, width, height, color, flashvars, name) {

	var o, e;
	
	// setup the object element
	o = document.createElement("object");
	o.codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0"
	o.width=width;
	o.height=height;
	o.id=name;
	document.getElementById(parentId).appendChild(o);
	
	// setup the object's param element(s)
	o.appendChild(createParam("movie", url));
	o.appendChild(createParam("allowScriptAccess", "sameDomain"));
	o.appendChild(createParam("wmode", "opaque"));
	o.appendChild(createParam("menu", "false"));
	o.appendChild(createParam("bgcolor", color));
	o.appendChild(createParam("FlashVars", flashvars));

	// try and setup the embed element
	try {
		e = document.createElement("embed");
		e.setAttribute("src", url);
		e.setAttribute("width", width);
		e.setAttribute("height", height);
		e.setAttribute("type", "application/x-shockwave-flash");
		e.setAttribute("pluginspage", "http://www.macromedia.com/go/getflashplayer");
		e.setAttribute("FlashVars", flashvars);
		e.setAttribute("menu", "false");
		e.setAttribute("bgcolor", color);
		e.setAttribute("allowScriptAccess", "sameDomain");
		o.appendChild(e);
	} catch (e) {
		// nothing - IE borks at the embed tag for some reason (it sucks?)
	}

	// this line MUST be last
	o.classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"; 
}