<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>简易计算器</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<link rel="stylesheet" href="Calculator.css" type="text/css"></link>
[removed][removed]
</head>
<body>
<div class="zt">
<form method="post" action="" name="form">
<div class="biaoti"><span>计 算 器</span><hr/></div>
<div>
<input name="ipt" type="text" id="ipts" value="0" size="40" maxlength="20" readonly="readonly" />
</div>
<div>
<input name="button23" type="button" class="bt" id="button23" value="Backspace" />
<input name="button21" type="button" class="bt" id="button20" value="CE" />
<input name="button20" type="button" class="bt" id="button21" value="C" />
</div>
<div>
<input blue" name="button1" type="button" class="bt1" id="button1" value="7" />
<input blue" name="button2" type="button" class="bt1" id="button2" value="8" />
<input blue" name="button3" type="button" class="bt1" id="button3" value="9" />
<input red" name="button4" type="button" class="bt1" id="button4" value="/" />
<input blue" name="button5" type="button" class="bt1" id="button5" value="sqrt" />
</div>
<div>
<input blue" name="button6" type="button" class="bt1" id="button6" value="4" />
<input blue" name="button7" type="button" class="bt1" id="button7" value="5" />
<input blue" name="button8" type="button" class="bt1" id="button8" value="6" />
<input red" name="button9" type="button" class="bt1" id="button9" value="*" />
<input blue" name="button10" type="button" class="bt1" id="button10" value="%" />
</div>
<div>
<input blue" name="button11" type="button" class="bt1" id="button11" value="1" />
<input blue" name="button12" type="button" class="bt1" id="button12" value="2" />
<input blue" name="button13" type="button" class="bt1" id="button13" value="3" />
<input red" name="button14" type="button" class="bt1" id="button14" value="-" />
<input blue" name="button15" type="button" class="bt1" id="button15" value="1/x" />
</div>
<div>
<input blue" name="button16" type="button" class="bt1" id="button16" value="0" />
<input blue" name="button17" type="button" class="bt1" id="button17" value="+/-" />
<input blue" name="button18" type="button" class="bt1" id="button18" value="." />
<input red" name="button19" type="button" class="bt1" id="button19" value="+" />
<input red" name="button22" type="button" class="bt1" id="button22" value="=" />
</div>
</form>
</div>
</body>
</html>
