// Shared Javascript functions

// Form Validation
function checkrequired(which) {
var pass=true;
if (document.images) {
for (i=0;i<which.length;i++) {
var tempobj=which.elements[i];
if (tempobj.id.substring(0,8)=="required") {
if (((tempobj.type=="text"||tempobj.type=="textarea")&&
tempobj.value=='')||(tempobj.type.toString().charAt(0)=="s"&&
tempobj.selectedIndex==0)) {
pass=false;
break;
         }
      }
   }
}
if (!pass) {
shortFieldName=tempobj.id.substring(8,30).toUpperCase();
alert("Please make sure the "+shortFieldName+" field was filled in.");
return false;
}
else
return true;
}

////////////////////////

function newWindow(imgName)
{
	var newWindow, windowLoc;
	windowLoc = "http://www.exoticaplants.com.au/display_image.aspx?" + imgName;
	newWindow = window.open(windowLoc,"Image","toolbar=no,menubar=no,location=no");
}

/////////////////////////

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];}
}


/////////////////////////

// Form validation for add 
function validateForm(form)
{
	if ((form.Quantity.value.length < 1) || (isNaN(form.Quantity.value)))
	{
		alert("The 'Quantity' Field either contains nothing, or contains non-numeric characters.");
		form.Quantity.focus();
		form.Quantity.select();
		return false;
	}
	
	else 
	{
		alert('Your Order has been sent to the Shopping Cart!\n\nPlease continue shopping or proceed to the Checkout..');
		return true;
	}
}



//////////////////


function validateCustomerForm(form)
{
	if (form.address.value.length < 1)
	{
		alert("The 'Address' Field contains no value");
		form.address.focus();
		form.address.select();
		return false;
	}
	
	if (form.shipaddress.value.length < 1)
	{
		alert("The 'Delivery Address' Field contains no value");
		form.shipaddress.focus();
		form.shipaddress.select();
		return false;
	}
	
	if (form.city.value.length < 1)
	{
		alert("The 'City' Field contains no value");
		form.city.focus();
		form.city.select();
		return false;
	}
	
	if (form.shipcity.value.length < 1)
	{
		alert("The 'Delivery City' Field contains no value");
		form.shipcity.focus();
		form.shipcity.select();
		return false;
	}
	
	if ((form.shipstate.value.length < 1) || !(isNaN(form.shipstate.value)))
	{
		alert("The 'Delivery State' Field either contains nothing, or contains numeric characters.");
		form.shipstate.focus();
		form.shipstate.select();
		return false;
	}

	if ((form.shippostcode.value.length < 1) || (isNaN(form.shippostcode.value)))
	{
		alert("The 'Delivery Postcode' Field either contains nothing, or contains non-numeric characters.");
		form.shippostcode.focus();
		form.shippostcode.select();
		return false;
	}	


	if ((form.fname.value.length < 1) || !(isNaN(form.fname.value)))
	{
		alert("The 'First Name' Field either contains nothing, or contains numeric characters.");
		form.fname.focus();
		form.fname.select();
		return false;
	}
	
	if ((form.lname.value.length < 1) || !(isNaN(form.lname.value)))
	{
		alert("The 'Last Name' Field either contains nothing, or contains numeric characters.");
		form.lname.focus();
		form.lname.select();
		return false;
	}

	if ((form.email.value.length < 1) || (isEmailAddress(form.email.value)))
	{
		alert("The 'E-mail' Field either contains nothing, or is not a valid email address.");
		form.email.focus();
		form.email.select();
		return false;
	}

	if ((form.state.value.length < 1) || !(isNaN(form.state.value)))
	{
		alert("The 'State' Field either contains nothing, or contains numeric characters.");
		form.state.focus();
		form.state.select();
		return false;
	}

	if ((form.postcode.value.length < 1) || (isNaN(form.postcode.value)))
	{
		alert("The 'Postcode' Field either contains nothing, or contains non-numeric characters.");
		form.postcode.focus();
		form.postcode.select();
		return false;
	}	

	else {return true;}
}

function isEmailAddress(email)
{
	var theStr = new String(email)
	var index = theStr.indexOf("@");
	if (index > 0)	{return false;}
	else			{return true;}
}