function goInStock(id) {
	var outOfStock = document.getElementById('outofstockline' + id);
	var inStock = document.getElementById('addtobasketline' + id);
	var outOfStockMessage = document.getElementById('outofstockmessage' + id);
	outOfStock.style.display = 'none';
	outOfStock.style.visibility = 'hidden';
	outOfStockMessage.style.display = 'none';
	outOfStockMessage.style.visibility = 'hidden';
	inStock.style.display = '';
	inStock.style.visibility = 'visible';
	
}

function goOutOfStock(id) {
	var outOfStock = document.getElementById('outofstockline' + id);
	var inStock = document.getElementById('addtobasketline' + id);
	var outOfStockMessage = document.getElementById('outofstockmessage' + id);
	inStock.style.display = 'none';
	inStock.style.visibility = 'hidden';
	outOfStockMessage.style.display = '';
	outOfStockMessage.style.visibility = 'visible';
	outOfStock.style.display = '';
	outOfStock.style.visibility = 'visible';
}
								


function checkStock(id,outOfStockItems) {
	// Build up out options selections
	
	var selections = new Array();
	var selectionCount = 0;
	for (i=0;i<document.getElementById('options' + id).elements.length;i++) {
		var element = document.getElementById('options' + id).elements[i];
		if(element.name.substring(0,6)=='OPT_ID') {
			switch(element.type)
			{
				case 'checkbox':
					// is this checkbox selected?
					if(element.checked == true) {
						// use this ID
						selections[selectionCount]=element.value;
						selectionCount++;
					} else {
						// otherwise we have to get out the nocheckvalue
						var nocheck = document.getElementById('options' + id).elements['NOCHECK_' + element.name]
						selections[selectionCount]=nocheck.value;
						selectionCount++;
					}
					break;
					
				case 'radio':
					if(element.checked == true) {
						selections[selectionCount]=element.value;
						selectionCount++;
					}
					break;
					
				case 'select-one':
					selections[selectionCount]=element.value;
					selectionCount++;
					break;

				default:
					break;
					
			}
			
		}

	}
						
	selections = (selections.sort());
	var selection = selections.join('-');
	var isOutOfStock = false;
	
	// Does this combination exist in out outofstock array?
	for(i=0; i<outOfStockItems.length; i++) {
		if(outOfStockItems[i]==selection) {
			isOutOfStock = true;
			break;
		}
	}
	
	if(isOutOfStock) {
		goOutOfStock(id);
	} else {
		goInStock(id);
	}
}
						

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