调色板工具

下面为效果显示

·可选16*16*16种颜色。
·单击左边的颜色会得到更多的颜色。
·单击右边的颜色会固定选取的颜色。
·输入框可以自定义颜色。

脚本说明:
把如下代码加入<body>区域中
<style type="text/css">

</style>
<table border="0" cellspacing="1" cellpadding="3" width="350" align="center" bgcolor="#dddddd">
<tr bgcolor="#FFFFFF"> 
<td width="10%" align="center"> 
<select name="select1" onchange="selectchg(this.value)">
<option value="1" selected>红</option>
<option value="2">绿</option>
<option value="3">蓝</option>
<option value="4">灰</option>
</select>
</td>
<td width="90%" align="center"> 
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr> 
<td align="right"> 
<input type="text" name="text1" class="memo" size="10">
<input type="button" name="Button2" value=">>" class="button" onClick="choosecolor()">
</td>
<td align="right" width="3%"> </td>
<td width="30%"> 
<table width="40" border="0" cellspacing="1" cellpadding="0" height="20"  class="cursorcross">
<tr> 
<td id="customcolor" bgcolor="#FFFFFF"  onMouseOver="showcolor(this)"> </td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
<tr bgcolor="#FFFFFF"> 
<td width="10%" align="center"> 
<table id="tableleft" border="0" cellspacing="1" cellpadding="0" class="cursorhand">
<script language="VBScript">
function hexit(which)
hexit=hex(which)
end function
</script>
<script language="JavaScript">
for(i=0;i<=15;++i)
{document.write('<tr><td align="center">'+ hexit(0+i*17) +'</td><td id="tdleft' + i +'" bgcolor="rgb('+ (0+i*17) + ',0,0)" width="15" height="15" onclick="changeright(this.num)" onmouseover="showcolor(this)"></td></tr>')
 document.all['tdleft' + i].num=i
}
</script>
</table>
</td>
<td align="center" width="90%"> 
<table id="tableleft" border="0" cellspacing="1" cellpadding="0" class="cursorcross">
<script language="JavaScript">
document.write('<tr><td></td>')
for(i=0;i<=15;++i)
{document.write('<td align="center">'+ hexit(0+i*17) +'</td>')}
document.write('</tr>')

for(i=0;i<=15;++i)
{document.write('<tr>')
 document.write('<td align="center">'+ hexit(0+i*17) +'</td>')
 for(j=0;j<=15;++j)
  {document.write('<td id="tdrightr' + i + 'c' + j +'" bgcolor="rgb(0,'+ (0+i*17) + ',' + (0+j*17) + ')" width="15" height="15" onmouseover="showcolor(this)" onclick="clickright(this)"></td>')}
 document.write('</tr>')
}

</script>
</table>
</td>
</tr>
<tr bgcolor="#FFFFFF"> 
<td colspan="2" height="20">·可选16*16*16种颜色。<br>
·单击左边的颜色会得到更多的颜色。<br>
·单击右边的颜色会固定选取的颜色。 <br>
·输入框可以自定义颜色。</td>
</tr>
</table>
<script language="JavaScript">
function selectchg(which)
{switch(which)
  {case '1' :leftR();break;
   case '2' :leftG();break;
   case '3' :leftB();break;
   case '4' :leftA();break;
  }
}
function leftR()
{for(i=0;i<=15;++i)
   {document.all['tdleft'+i].bgColor='rgb('+ (0+i*17) + ',0,0)'}
 rightR(0)
}
function leftG()
{for(i=0;i<=15;++i)
   {document.all['tdleft'+i].bgColor='rgb(0,'+ (0+i*17) + ',0)'}
 rightG(0)
}
function leftB()
{for(i=0;i<=15;++i)
   {document.all['tdleft'+i].bgColor='rgb(0,0,'+ (0+i*17) + ')'}
 rightB(0)
}
function leftA()
{for(i=0;i<=15;++i)
   {document.all['tdleft'+i].bgColor='rgb('+ (0+i*17) + ','+ (0+i*17) + ','+ (0+i*17) + ')'}
 rightA()
}
function rightR(which)
{for(i=0;i<=15;++i)
   {for(j=0;j<=15;++j)
     {document.all['tdrightr' + i + 'c' + j].bgColor='rgb(' + (0+which*17) + ',' + (0+i*17) + ','+ (0+j*17) + ')'}
    }
}
function rightG(which)
{for(i=0;i<=15;++i)
   {for(j=0;j<=15;++j)
     {document.all['tdrightr' + i + 'c' + j].bgColor='rgb(' + (0+i*17) + ',' + (0+which*17) +  ',' + (0+j*17) + ')'}
    }
}
function rightB(which)
{for(i=0;i<=15;++i)
   {for(j=0;j<=15;++j)
     {document.all['tdrightr' + i + 'c' + j].bgColor='rgb(' + (0+i*17) + ','+ (0+j*17)+ ',' + (0+which*17) + ')'}
    }
}
function rightA()
{for(i=0;i<=15;++i)
   {for(j=0;j<=15;++j)
     {document.all['tdrightr' + i + 'c' + j].bgColor='rgb(' + (0+i*16+j) + ','+ (0+i*16+j)+ ',' + (0+i*16+j) + ')'}
    }
}
var rightclicked=false
function clickright(which)
{if(rightclicked){rightclicked=false;showcolor(which)}else{rightclicked=true}
}
function changeright(which)
{switch(select1.value)
  {case '1' :rightR(which);break;
   case '2' :rightG(which);break;
   case '3' :rightB(which);break;
 }
}
function showcolor(which)
{if(rightclicked)return;
 text1.value=which.bgColor
 choosecolor()
}
function choosecolor()
{customcolor.bgColor=text1.value
}
</script>