***页面背景***用按钮来调整各颜色的比例，从而调整背景颜色
把下列代码加到网页的<body></body>标签之间 从google下载我的照片管理软件要完成此效果把如下代码加入到<body>区域中
<script language="javascript">
<!-- hiding
var red=0;
var green=0;
var blue=0;
var value=0;
var convert = new array()
var hexbase= new array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f");
for (x=0; x<16; x++){
for (y=0; y<16; y++){
convert= hexbase + hexbase;
value++;
}
}
function clear(){
document.color.bl.value= blue;
document.color.rd.value= red;
document.color.gr.value= green;
}
function display(){
redx = convert
greenx = convert
bluex = convert
var rgb = "#"+redx+greenx+bluex;
document.color.rgbdspl.value= rgb;
document.bgcolor =rgb;
}
function upred(x){
if ((red+x)<=255)
red+=x
document.color.rd.value= red;
display()
}
function downred(x){
if ((red-x)>=0)
red-=x
document.color.rd.value= red;
display()
}
function upgreen(x){
if ((green+x)<=255)
green+=x
document.color.gr.value= green;
display()
}
function downgreen(x){
if ((green-x)>=0)
green-=x
document.color.gr.value= green;
display()
}
function upblue(x){
if ((blue+x)<=255)
blue+=x
document.color.bl.value= blue;
display()
}
function downblue(x){
if ((blue-x)>=0)
blue-=x
document.color.bl.value= blue;
display()
}
// done hiding -->
</script>
<form name="color">
<table align="center">
<tr align="center">
<td width="52">
<input name="red" type="button" value=" +50 " onclick="upred(50)">
</td>
<td width="58">
<input name="red2" type="button" value=" + 10 " onclick="upred(10)">
</td>
<td width="46">
<input name="red2" type="button" value=" + 1" onclick="upred(1)">
</td>
<td width="52"><font color="#ff0000" size=+3><b><font color="#fa0000" face="楷体_gb2312">红</font></b></font></td>
<td width="46">
<input name="red-" type="button" value=" - 1" onclick="downred(1)">
</td>
<td width="58">
<input name="red-" type="button" value=" - 10 " onclick="downred(10)">
</td>
<td width="52">
<input name="red-" type="button" value=" -50 " onclick="downred(50)">
</td>
<td width="29">
<input type="text" name="rd" size=3>
</td>
</tr>
<tr align="center">
<td width="52">
<input name="green" type="button" value=" +50 " onclick="upgreen(50)">
</td>
<td width="58">
<input name="green" type="button" value=" + 10 " onclick="upgreen(10)">
</td>
<td width="46">
<input name="green" type="button" value=" + 1" onclick="upgreen(1)">
</td>
<td width="52"><font color="#00ff00" size=+3><b><font color="#00fa00" face="楷体_gb2312">绿</font></b></font></td>
<td width="46">
<input name="green-" type="button" value=" - 1" onclick="downgreen(1)">
</td>
<td width="58">
<input name="green-" type="button" value=" - 10 " onclick="downgreen(10)">
</td>
<td width="52">
<input name="green-" type="button" value=" -50 " onclick="downgreen(50)">
</td>
<td width="29">
<input type="text" name="gr" size=3>
</td>
</tr>
<tr align="center">
<td width="52">
<input name="blue" type="button" value=" +50 " onclick="upblue(50)">
</td>
<td width="58">
<input name="blue" type="button" value=" + 10 " onclick="upblue(10)">
</td>
<td width="46">
<input name="blue" type="button" value=" + 1" onclick="upblue(1)">
</td>
<td width="52"><font color="#0000ff" size=+3><b><font color="#0000fa" face="楷体_gb2312">蓝</font></b></font></td>
<td width="46">
<input name="blue-" type="button" value=" - 1" onclick="downblue(1)">
</td>
<td width="58">
<input name="blue-" type="button" value=" - 10 " onclick="downblue(10)">
</td>
<td width="52">
<input name="blue-" type="button" value=" -50 " onclick="downblue(50)">
</td>
<td width="29">
<input type="text" name="bl" size=3>
</td>
</tr>
<tr align="center">
<td width="52"> </td>
<td width="58"> </td>
<td width="46"> </td>
<td width="52">
<input type="text" name="rgbdspl" size=7>
</td>
<td width="46"> </td>
<td width="58"> </td>
<td width="52"> </td>
<td width="29"> </td>
</tr>
</table>
<div align="center"></div>
<div align="center"></div>
</form>
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