7 function disabled(op) {
8 if (op == "." && display.text.toString().search(/\./) != -1) {
10 } else if (op == window.squareRoot && display.text.toString().search(/-/) != -1) {
17 function doOperation(op) {
18 if (op == '*')//Keyboard Aliases
19 op = window.multiplication;
26 if (op.toString().length==1 && ((op >= "0" && op <= "9") || op==".") ) {
27 if (display.text.toString().length >= 14)
28 return; // No arbitrary length numbers
29 if (lastOp.toString().length == 1 && ((lastOp >= "0" && lastOp <= "9") || lastOp == ".") ) {
30 display.text = display.text + op.toString()
39 if (display.currentOperation.text == "+") {
40 display.text = Number(display.text.valueOf()) + Number(curVal.valueOf())
41 } else if (display.currentOperation.text == "-") {
42 display.text = Number(curVal) - Number(display.text.valueOf())
43 } else if (display.currentOperation.text == window.multiplication) {
44 display.text = Number(curVal) * Number(display.text.valueOf())
45 } else if (display.currentOperation.text == window.division) {
46 display.text = Number(Number(curVal) / Number(display.text.valueOf())).toString()
47 } else if (display.currentOperation.text == "=") {
50 if (op == "+" || op == "-" || op == window.multiplication || op == window.division) {
51 display.currentOperation.text = op
52 curVal = display.text.valueOf()
57 display.currentOperation.text = ""
60 display.text = (1 / display.text.valueOf()).toString()
61 } else if (op == "x^2") {
62 display.text = (display.text.valueOf() * display.text.valueOf()).toString()
63 } else if (op == "Abs") {
64 display.text = (Math.abs(display.text.valueOf())).toString()
65 } else if (op == "Int") {
66 display.text = (Math.floor(display.text.valueOf())).toString()
67 } else if (op == window.plusminus) {
68 display.text = (display.text.valueOf() * -1).toString()
69 } else if (op == window.squareRoot) {
70 display.text = (Math.sqrt(display.text.valueOf())).toString()
71 } else if (op == "mc") {
73 } else if (op == "m+") {
74 memory += display.text.valueOf()
75 } else if (op == "mr") {
76 display.text = memory.toString()
77 } else if (op == "m-") {
78 memory = display.text.valueOf()
79 } else if (op == window.leftArrow) {
80 display.text = display.text.toString().slice(0, -1)
81 if (display.text.length == 0) {
84 } else if (op == "Off") {
86 } else if (op == "C") {
88 } else if (op == "AC") {