function quantity() {

document.getElementById("singleWallBig_total_cost").value = 
(Math.round((document.getElementById("singleWallBig_quantity").value*singleWallBig_cost)*100)/100).toFixed(2);
	document.getElementById("doubleWallBig_total_cost").value = 
(Math.round((document.getElementById("doubleWallBig_quantity").value*doubleWallBig_cost)*100)/100).toFixed(2);
	document.getElementById("usedDoubleWallBig_total_cost").value = 
(Math.round((document.getElementById("usedDoubleWallBig_quantity").value*usedDoubleWallBig_cost)*100)/100).toFixed(2);
	document.getElementById("doubleWallBook_total_cost").value = 
(Math.round((document.getElementById("doubleWallBook_quantity").value*doubleWallBook_cost)*100)/100).toFixed(2);
	document.getElementById("usedDoubleWallBig_total_cost").value = 
(Math.round((document.getElementById("usedDoubleWallBig_quantity").value*usedDoubleWallBig_cost)*100)/100).toFixed(2);
	document.getElementById("doubleWallBook_total_cost").value = 
(Math.round((document.getElementById("doubleWallBook_quantity").value*doubleWallBook_cost)*100)/100).toFixed(2);
	document.getElementById("singleWallBook_total_cost").value = 
(Math.round((document.getElementById("singleWallBook_quantity").value*singleWallBook_cost)*100)/100).toFixed(2);
	document.getElementById("usedDoubleWallBook_total_cost").value = 
(Math.round((document.getElementById("usedDoubleWallBook_quantity").value*usedDoubleWallBook_cost)*100)/100).toFixed(2);
	document.getElementById("tape_total_cost").value = 
(Math.round((document.getElementById("tape_quantity").value*tape_cost)*100)/100).toFixed(2);
	document.getElementById("wardrobe_total_cost").value = 
(Math.round((document.getElementById("wardrobe_quantity").value*wardrobe_cost)*100)/100).toFixed(2);
	document.getElementById("acidFree_total_cost").value = 
(Math.round((document.getElementById("acidFree_quantity").value*acidFree_cost)*100)/100).toFixed(2);
	document.getElementById("bubbleSml_total_cost").value = 
(Math.round((document.getElementById("bubbleSml_quantity").value*bubbleSml_cost)*100)/100).toFixed(2);
	document.getElementById("bubbleLrg_total_cost").value = 
(Math.round((document.getElementById("bubbleLrg_quantity").value*bubbleLrg_cost)*100)/100).toFixed(2);
	document.getElementById("archive_total_cost").value = 
(Math.round((document.getElementById("archive_quantity").value*archive_cost)*100)/100).toFixed(2);
	document.getElementById("sofa_total_cost").value = 
(Math.round((document.getElementById("sofa_quantity").value*sofa_cost)*100)/100).toFixed(2);
	document.getElementById("matress_total_cost").value = 
(Math.round((document.getElementById("matress_quantity").value*matress_cost)*100)/100).toFixed(2);
customTotal();
}

function customTotal() {
		document.getElementById("custom_total_cost").value =
			((document.getElementById("singleWallBig_total_cost").value*1) +
			(document.getElementById("doubleWallBig_total_cost").value*1) +
			(document.getElementById("usedDoubleWallBig_total_cost").value*1) +
			(document.getElementById("doubleWallBook_total_cost").value*1) +
			(document.getElementById("singleWallBook_total_cost").value*1) +
			(document.getElementById("usedDoubleWallBook_total_cost").value*1) +
			(document.getElementById("tape_total_cost").value*1) +
			(document.getElementById("wardrobe_total_cost").value*1) +
			(document.getElementById("acidFree_total_cost").value*1) +
			(document.getElementById("bubbleSml_total_cost").value*1) +
			(document.getElementById("bubbleLrg_total_cost").value*1) +
			(document.getElementById("archive_total_cost").value*1) +
			(document.getElementById("matress_total_cost").value*1) +
			(document.getElementById("sofa_total_cost").value*1)).toFixed(2);

}