//*******************************************************************************************************
// TOGGLE DISPLAY OF A DIV
// Toggle the display of a div element
function toggleDisplay(divId) 
{
	var div = document.getElementById(divId);
	div.style.display = (div.style.display=="block" ? "none" : "block");
}
//*******************************************************************************************************
// FADE CONTENT
// Slowly make a div disapear!
function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 100);
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
	
	if(opacity == 0) {
		fl = document.getElementById(id);
		fl.style.display = "none";
	}
}

//*******************************************************************************************************
// UPDATE ITEM
// This function gets called when a user updates the quantity of an item in their cart
function UpdateQty(item)
{
	itemId = item.name;
	newQty = item.options[item.selectedIndex].text;
	
	document.location.href = '/koodooecommerce.co.uk/my_cart/update/'+itemId+'/'+newQty+'/';
}

//*******************************************************************************************************
// Validate the register form
function validate_frm_register()
{
	valid = true;

    if ( document.frm_register.FirstName.value == "" )
    {
        alert ( "Please fill in the 'Your Name' box." );
		document.frm_register.FirstName.focus();
        return false;
    }
	else if ( document.frm_register.SecondName.value == "" )
	{
		alert ( "Please fill in the 'Your Second Name' box." );
        document.frm_register.SecondName.focus();
		return false;
	}
	else if ( document.frm_register.Email.value == "" )
	{
		alert ( "Please fill in the 'Your Email' box." );
        document.frm_register.Email.focus();
		return false;
	}
	else if ( echeck(document.frm_register.Email.value) == false )
	{
        document.frm_register.Email.focus();
		return false;
	}
	else if ( document.frm_register.Tel.value == "" )
	{
		alert ( "Please fill in the 'Your Telephone Number' box." );
        document.frm_register.Tel.focus();
		return false;
	}
	else if ( document.frm_register.Address1.value == "" )
	{
		alert ( "Please fill in the 'Your Address Line 1' box." );
        document.frm_register.Address1.focus();
		return false;
	}
	else if ( document.frm_register.Address2.value == "" )
	{
		alert ( "Please fill in the 'Your Address Line 2' box." );
        document.frm_register.Address2.focus();
		return false;
	}
	else if ( document.frm_register.City.value == "" )
	{
		alert ( "Please fill in the 'Your City' box." );
        document.frm_register.City.focus();
		return false;
	}
	else if ( document.frm_register.Postcode.value == "" )
	{
		alert ( "Please fill in the 'Your Postcode' box." );
        document.frm_register.Postcode.focus();
		return false;
	}
	else if ( document.frm_register.Password.value != document.frm_register.Password2.value )
	{
		alert ( "Your passwords do not match, please check you have entrered them correctly." );
        document.frm_register.Password.focus();
		return false;
	}
	else if ( document.frm_register.ReadTerms.checked == false  )
	{
		alert ( "Please check the tick box to confirm you have read and agree to our terms and conditions." );
        document.frm_register.ReadTerms.focus();
		return false;
	}

    return valid;
}

//*******************************************************************************************************
// CHECK DELETE
// Toggle the display of a div element
function deleteCheck(myMessage)
{
	
	result=confirm(myMessage);
	
	if (result==true) 
	{ 
		return true;
		//window.location = 'section_delete.php'
	}
	else 
	{
		return false;
	}
	
}



//*******************************************************************************************************
// CHECK if real email
function echeck(str) {

	var message = "Please make sure you enter a valid email address.";
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert(message)
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert(message)
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert(message)
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		alert(message)
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert(message)
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		alert(message)
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		alert(message)
		return false
	 }

	 return true					
}

function alertMessage(myMessage)
{
	alert (myMessage);
	return false;
}