items_discount = new Array();
items_discount[0] = new Array(0,143,5,10.00);
items_discount[1] = new Array(1,143,10,20.00);
items_discount[2] = new Array(2,142,10,20.00);
items_discount[3] = new Array(3,142,5,10.00);
items_discount[4] = new Array(4,17,3,5.00);
items_discount[5] = new Array(5,17,5,10.00);
items_discount[6] = new Array(6,17,10,20.00);