function rindexOf(str,c){
	var pos = str.indexOf(c);
	var r = -1;
	while(pos >= 0){
		if(pos >= 0) r = pos;
		pos = str.indexOf(c,pos+1);
	}
	return r;
}


function selectOption(selectbox, value){
	for(var i=0; i<selectbox.options.length; i++){
		if(selectbox.options[i].value == value)
			selectbox.options[i].selected = 'selected'; 
		else
			selectbox.options[i].style.color = '';
	}
}

function disableOption(selectbox, value){
	for(var i=0; i<selectbox.options.length; i++){
		if(selectbox.options[i].value == value)
			selectbox.options[i].style.color = '#999'; 
		else
			selectbox.options[i].style.color = '';
	}
}




function menu(catId, subcats, pics){
	if(pics > 0 || subcats <= 0) return true;

	var sc = document.getElementById('subcats' + catId);

	if(sc.innerHTML != ''){
		sc.innerHTML = '';
	} else {
        if (window.XMLHttpRequest) 
			var xml = new XMLHttpRequest();
		else if (window.ActiveXObject) 
			var xml = new ActiveXObject("Microsoft.XMLHTTP");
		
            if(xml){
            xml.open('POST','_ajax.asp?getMenu=' + catId,true);
            xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
            xml.send('receive');
            xml.onreadystatechange = function() {
              if (xml.readyState == 4 && xml.responseText != '')
                    sc.innerHTML = xml.responseText;
            }
		}
	}
	
	
	
	return false;
}






function updateCartBasket(){
	if (window.XMLHttpRequest) 
		var xml = new XMLHttpRequest();
	else if (window.ActiveXObject) 
		var xml = new ActiveXObject("Microsoft.XMLHTTP");

		if(xml){
		xml.open('POST', '_ajax.asp?getCart=true', true);
		xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xml.send('receive');
		xml.onreadystatechange = function() {
	      if (xml.readyState == 4)
				document.getElementById('cart').innerHTML = xml.responseText;
		}
	}
}

function updateCartBasketForm(){
	if (window.XMLHttpRequest) 
		var xml = new XMLHttpRequest();
	else if (window.ActiveXObject) 
		var xml = new ActiveXObject("Microsoft.XMLHTTP");

		if(xml){
		xml.open('POST', '_ajax.asp?getCartPriceForm=true', true);
		xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xml.send('receive');
		xml.onreadystatechange = function() {
	      if (xml.readyState == 4)
				document.getElementById('priceCartForm').innerHTML = xml.responseText;
		}
	}
}


function cartItem(imageId,action){
	if (window.XMLHttpRequest) 
		var xml = new XMLHttpRequest();
	else if (window.ActiveXObject) 
		var xml = new ActiveXObject("Microsoft.XMLHTTP");

		if(xml){
		xml.open('POST', '_ajax.asp?setCartItem=' + imageId + '&action=' + action, true);
		xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xml.send('receive');
		xml.onreadystatechange = function() {
	      if (xml.readyState == 4 && xml.responseText == 'OK')
				updateCartBasket();
                if(document.URL=="http://www.stephenbelcher.net/price-request.asp") {
                	updateCartBasketForm();
                }
		}
	}
}



function sendPriceRequest(f){
	if(f.prname.value == ''){
		alert('Please specify your name');
		f.prname.focus();
		return false;
	} else if(f.prmail.value == ''){
		alert('Please specify your e-mail');
		f.prmail.focus();
		return false;
	} else if(f.agreement.checked == false){
		alert('You have to agree with the Stephen Belcher Photography Ltd License agreement');
		f.agreement.focus();
		return false;
	}
	
	return true;
}