function init(){
	var x,y;
	var test1 = document.body.scrollHeight;
	var test2 = document.body.offsetHeight
	if (test1 > test2) // all but Explorer Mac
	{
		x = document.body.scrollWidth;
		y = document.body.scrollHeight;
	}
	else // Explorer Mac;
		 //would also work in Explorer 6 Strict, Mozilla and Safari
	{
		x = document.body.offsetWidth;
		y = document.body.offsetHeight;
	}
	//document.images['sizer'].height = y-140;
}

function checkForm(frm){ /* test if element will work here */
	if(!validEmail(frm)){
		return false;
	}
	switch(frm.selPreference.value){
		case "telephone" :
			if(!validTelephone(frm)){
				alert("Please supply a valid telephone number if you would like to be contacted by this method");
				return false;
			}
			break;
		case "email" :
			return true;
			break;
		default:
			return false;
			break;
	}
	return true;
}

function validTelephone(frm){
	var str = frm.txtTelephone.value;
	str = str.replace(/\s/g, '');
	var regpat = /^(\+)?[\d\(\)]{6,}$/;
	var b = regpat.test(str);
	return b;
}

function confirmDelete(){
	var agree=confirm("Are you sure you want to delete this item?");
	if (agree)
		return true ;
	else
		return false ;
}

function buildBreadcrumb() {
	var aFolders = new Array();
	var href = document.location.toString();
	aFolders = href.split('/');
	
	var strout = '';
	for(var i=2; i<aFolders.length; i++){
		if(i==2){aFolders[i]='home'}
		strout += '<a href="';
		if(i==aFolders.length-1){
			strout += buildDepth((aFolders.length-i)+1) + aFolders[i];
		}
		else {
			strout += buildDepth((aFolders.length-i)+1) + 'default.php';
		}
		strout += '">' + tidyLabel(aFolders[i]) + '</a>&nbsp;&gt;&nbsp;';
	}
	document.write(strout);
}

function buildDepth(iterations){
	var iterations=iterations-3;
    var depthStr='';
	
    for (i=0;i<iterations;i++)
    {
        depthStr=depthStr + '../';
    }
    return depthStr;
}

function tidyLabel(str){
	var strout = '';
	var a = str.split(".")
	strout = a[0];
	strout = strout.replace(/(_)/g, " ");
	strout = strout.replace(/(-)/g, " ");
	return strout;
}

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_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];}}
}

var requester = null;
function doSubscription(strEmailAddress){
	if (requester != null && requester.readyState != 0 && requester.readyState != 4){ 
		requester.abort(); 
	} 
	try { 
		requester = new XMLHttpRequest(); 
	} 
	catch (error){ 
		try { 
			requester = new ActiveXObject("Microsoft.XMLHTTP"); 
		} 
		catch (error) { 
			requester = null; 
			return false; 
		} 
	} 
	requester.open("GET", "/common/script/signup.php?address=" + strEmailAddress);
	requester.onreadystatechange = function() {
		if (requester.readyState == 4 && requester.status == 200) {
			var response = requester.responseText;
            writeSubscribe(response);
        }
	} 
	requester.send(null); 
	return true;
}

function writeSubscribe(answer){
	//alert(answer);
	var btn = document.getElementById("btnSubscribe");
	switch(answer){
		case 'invalid address':
			btn.value = answer;
			break;
		case 'added':
			btn.value = answer;
			btn.disabled = true;
			break;
		case 'already in':
			btn.value = answer;
			btn.disabled = true;
			break;
	}
	return true;
}

function fetchSubCategories(id){
	try{
		requester = window.XMLHttpRequest ? new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");
	}
	catch(e){
	}
	requester.open("GET", "/common/script/tool-categories.php?id=" + id);
	requester.onreadystatechange = writeCategorySelect;  
	requester.send(null); 
	return true;
}

function writeCategorySelect(){
	if ((requester.readyState == 4) && (requester.status == 200)){
		document.getElementById("2ndCategoryEditForm").style.visibility = 'visible';
		document.getElementById("sel2ndCategory").innerHTML = requester.responseText;
	}
}

function fetchTools(text){
	try{
		requester = window.XMLHttpRequest ? new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");
	}
	catch(e){
	}
	requester.open("GET", "/common/script/tool-list.php?text=" + text);
	requester.onreadystatechange = writeToolList;  
	requester.send(null); 
	return true;
}

function writeToolList(){
	if ((requester.readyState == 4) && (requester.status == 200)){
		document.getElementById("toollist").innerHTML = requester.responseText;
	}
}

function updateOrder(list){
	var url = '/common/script/update-order.php';
	var params = Sortable.serialize(list.id,{name:'list'});
	var ajax = new Ajax.Request(url,{method:'post',parameters:params});
}

function validEmail(frm){
	var regpat = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*\s+<(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})>$|^(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})$/;
	var b = regpat.test(frm.txtEmail.value);
	if(!b){
		alert("please enter a valid email address");
	}
	return b;
}