$('#qty').change(function() {


});

function update()
{
	// searching for qty input
	var qtyInput = document.getElementById('qty');
	if (!qtyInput)
	{
		return;
	}
	
	// updating qty value
	var total_v = document.getElementById('total_img');
	var newValue = parseInt(qtyInput.value) 
	if (isNaN(newValue))
	{
		newValue=0;
		qtyInput.value = newValue ;
	}
	var total = parseInt(total_v.value);
	if (newValue < 1)
	{
		newValue = 1;
	}
	
	
	var photo_price = 2; 
	var discount_proc=0;
	
	
	if (newValue+total>=100) 
	{
		discount_proc=10;
	}
	else
	{
		for (i=0;i<10;i+=1)
		{
			if (((newValue+total)>=i*10)&&((newValue+total)<i*10+10))
			{
				discount_proc=i;
			}
		}
	}
	$("#one_photo_price").text(photo_price);
	$("#all_price").text(photo_price*newValue);
	$("#discount_proc").text(discount_proc);
	$("#discount_price").text(discount_proc*photo_price*newValue/100);
	$("#to_pay").text(
			(photo_price*newValue-discount_proc*photo_price*newValue/100).toFixed(2)
			);
	var amount = document.getElementById('amount');
	amount.value  =(photo_price*newValue-discount_proc*photo_price*newValue/100).toFixed(2);
	var item_name = document.getElementById('item_name');
	item_name.value  = newValue + ' images for processing';
	var item_number = document.getElementById('item_number');
	item_number.value  = newValue;
	setTimeout('update()',100);
}




function updateQty(addedValue)
{
	// searching for qty input
	var qtyInput = document.getElementById('qty');
	if (!qtyInput)
	{
		return;
	}
	
	// updating qty value
	
	var total_v = document.getElementById('total_img');
	var newValue = parseInt(qtyInput.value) + addedValue;
	var total = parseInt(total_v.value);
	if (addedValue==0)
		newValue = 1;
	if (newValue < 1)
	{
		newValue = 1;
	}
	
	qtyInput.value = newValue ;
	var photo_price = 2; 
	var discount_proc=0;
	
	
	if (newValue+total>=100) 
	{
		discount_proc=10;
	}
	else
	{
		for (i=0;i<10;i+=1)
		{
			if (((newValue+total)>=i*10)&&((newValue+total)<i*10+10))
			{
				discount_proc=i;
			}
		}
	}
	$("#one_photo_price").text(photo_price);
	$("#all_price").text(photo_price*newValue);
	$("#discount_proc").text(discount_proc);
	$("#discount_price").text(discount_proc*photo_price*newValue/100);
	$("#to_pay").text(
			(photo_price*newValue-discount_proc*photo_price*newValue/100).toFixed(2)
			);
	var amount = document.getElementById('amount_');
	amount.value  =(photo_price*newValue-discount_proc*photo_price*newValue/100).toFixed(2);
	var item_name = document.getElementById('item_name');
	item_name.value  = newValue + ' images for processing';
	var item_number = document.getElementById('item_number');
	item_number.value  = newValue;
	
	
}

<!-- InstanceEndEditable -->

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) { //v4.01
  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];}
}

$(document).ready(function(){
	updateQty(0);
	update();
	$("#pbox_picnik").remove();
	
	});
//--------------------------------------------------------------------------------------------------------

function testKey(e) 
{ 
  var key = (typeof e.charCode == 'undefined' ? e.keyCode : e.charCode);
  if (e.ctrlKey || e.altKey || key < 32) return true;
  key = String.fromCharCode(key);
  return /[\d]/.test(key);
}


//----------------------------------------