function showCurrency(sel, numCartValues){
	var selected_div = sel.options[sel.selectedIndex].value;
		 
	for (j=0; j<numCartValues; j++){
		//alert(j);
		for (i=0; i<=2; i++){	
		
			if (i == selected_div){
				document.getElementById('item_price'+j+i).style.display = '';
				document.getElementById('total_price'+j+i).style.display = '';
			
			}
			else {
				document.getElementById('item_price'+j+i).style.display = 'none';
				document.getElementById('total_price'+j+i).style.display = 'none';
			}
		}
	}
	document.getElementById('total_price').value = document.getElementById('ordertotal'+selected_div).value ;
	
}


function validCart(countLicenses){
	var countInvalid = 0;
	var avangateIds = [];
	var avangateQtys = [];
	
	for (i=0; i<countLicenses; i++){
		var qtyValue = document.getElementById('qty' + i).value;
		var avaValue = document.getElementById('avaId-' + i).value;
		
		avangateIds.push(avaValue);
		avangateQtys.push(qtyValue);
		
		if ( isNaN(qtyValue) ) {
			alert('Only numbers !');
			document.getElementById('qty' + i ).focus();
			return false;
		}
	
		if ( qtyValue > 99){
			alert('Please insert smaller values than 100 !');	
			document.getElementById('qty' + i ).focus();
			return false;
		}
			
		if ( qtyValue == 0 ){
			countInvalid++;
		}
	}
	
	if (countLicenses==countInvalid){
		alert('Please add atleast 1 license !');
		return false;
	}
	
	// avangate direct post //
	if(document.getElementById('view_cart')._avangateDirectPost){
		var postLink = 'https://secure.avangate.com/order/checkout.php?PRODS=' + avangateIds.join(",") + '&QTY='+avangateQtys.join(",");
		
		// The client is buying a fusion charts product //
		if(document.getElementById( 'view_cart' )._isFusionCharts){
			postLink += '&AFFILIATE=14796';
		}
		
		// instead of posting just redirect //
		_gaq.push(['_link', postLink]);
		return false;
		
		/*
		document.getElementById('view_cart').action = postLink;
		
		// register the domain change with GA //
		_gaq.push(['_linkByPost', document.getElementById( 'view_cart' )]);
		*/
	}
	
	return true;
}