<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Beginning of JavaScript -
function changecolor(code) {
document.bgColor=code
}
</SCRIPT>
</head>
</SCRIPT>
</HEAD>
<BODY>
<FORM>
<input type="button" name="Button1" value="BLACK" onclick="changecolor('black')">
<input type="button" name="Button2" value="RED" onclick="changecolor('red')">
<input type="button" name="Button3" value="GREEN" onclick="changecolor('green')">
<input type="button" name="Button4" value="BLUE" onclick="changecolor('blue')">
<input type="button" name="Button5" value="YELLOW" onclick="changecolor('yellow')">
<input type="button" name="Button6" value="WHITE" onclick="changecolor('white')">
</FORM>
<form name="calculator" >
Solution<input type="textfield" name="ans" value="">
<input type="reset" value="Reset">
<input type="button" value="=" onClick="document.calculator.ans.value=eval(document.calculator.ans.value)">
</form>
</BODY>
</HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Beginning of JavaScript -
function changecolor(code) {
document.bgColor=code
}
</SCRIPT>
</head>
</SCRIPT>
</HEAD>
<BODY>
<FORM>
<input type="button" name="Button1" value="BLACK" onclick="changecolor('black')">
<input type="button" name="Button2" value="RED" onclick="changecolor('red')">
<input type="button" name="Button3" value="GREEN" onclick="changecolor('green')">
<input type="button" name="Button4" value="BLUE" onclick="changecolor('blue')">
<input type="button" name="Button5" value="YELLOW" onclick="changecolor('yellow')">
<input type="button" name="Button6" value="WHITE" onclick="changecolor('white')">
</FORM>
<form name="calculator" >
Solution<input type="textfield" name="ans" value="">
<input type="reset" value="Reset">
<input type="button" value="=" onClick="document.calculator.ans.value=eval(document.calculator.ans.value)">
</form>
</BODY>
</HTML>