select框中的颜色变化

下面为效果显示

脚本说明:
把如下代码加入<body>区域中
	<script language="javascript">
	colors = new Array('#FFFFFF','#FFCCFF','#FF99FF','#FF66FF','#FF33FF','#FF00FF','#FFFFCC','#FFCCCC','#FF99CC','#FF66CC','#FF33CC','#FF00CC','#FFFF99','#FFCC99','#FF9999','#FF6699','#FF3399','#FF0099','#FFFF66','#FFCC66','#FF9966','#FF6666','#FF3366','#FF0066','#FFFF33','#FFCC33','#FF9933','#FF6633','#FF3333','#FF0033','#FFFF00','#FFCC00','#FF9900','#FF6600','#FF3300','#FF0000','#CCFFFF','#CCCCFF','#CC99FF','#CC66FF','#CC33FF','#CC00FF','#CCFFCC','#CCCCCC','#CC99CC','#CC66CC','#CC33CC','#CC00CC','#CCFF99','#CCCC99','#CC9999','#CC6699','#CC3399','#CC0099','#CCFF66','#CCCC66','#CC9966','#CC6666','#CC3366','#CC0066','#CCFF33','#CCCC33','#CC9933','#CC6633','#CC3333','#CC0033','#CCFF00','#CCCC00','#CC9900','#CC6600','#CC3300','#CC0000','#99FFFF','#99CCFF','#9999FF','#9966FF','#9933FF','#9900FF','#99FFCC','#99CCCC','#9999CC','#9966CC','#9933CC','#9900CC','#99FF99','#99CC99','#999999','#996699','#993399','#990099','#99FF66','#99CC66','#999966','#996666','#993366','#990066','#99FF33','#99CC33','#999933','#996633','#993333','#990033','#99FF00','#99CC00','#999900','#996600','#993300','#990000','#66FFFF','#66CCFF','#6699FF','#6666FF','#6633FF','#6600FF','#66FFCC','#66CCCC','#6699CC','#6666CC','#6633CC','#6600CC','#66FF99','#66CC99','#669999','#666699','#663399','#660099','#66FF66','#66CC66','#669966','#666666','#663366','#660066','#66FF33','#66CC33','#669933','#666633','#663333','#660033','#66FF00','#66CC00','#669900','#666600','#663300','#660000','#33FFFF','#33CCFF','#3399FF','#3366FF','#3333FF','#3300FF','#33FFCC','#33CCCC','#3399CC','#3366CC','#3333CC','#3300CC','#33FF99','#33CC99','#339999','#336699','#333399','#330099','#33FF66','#33CC66','#339966','#336666','#333366','#330066','#33FF33','#33CC33','#339933','#336633','#333333','#330033','#33FF00','#33CC00','#339900','#336600','#333300','#330000','#00FFFF','#00CCFF','#0099FF','#0066FF','#0033FF','#0000FF','#00FFCC','#00CCCC','#0099CC','#0066CC','#0033CC','#0000CC','#00FF99','#00CC99','#009999','#006699','#003399','#000099','#00FF66','#00CC66','#009966','#006666','#003366','#000066','#00FF33','#00CC33','#009933','#006633','#003333','#000033','#00FF00','#00CC00','#009900','#006600','#003300','#000000');
	function show(file){
		var url = file.options[file.selectedIndex].value;
		if(document.all || document.layers)
			location.href = url;
		else if(document.getElementById){
			if(url != undefined)
				location.href = url;
		}
	}
	
	var streng;
	var color1 = colors[Math.round(Math.random() * (colors.length-1))];
	var color2 = colors[Math.round(Math.random() * (colors.length-1))];
	var color3 = colors[Math.round(Math.random() * (colors.length-1))];
	
	
	streng = '<style type="text/css">select{width:300; height:118; overflow:hidden; font-family:times new roman; font-size: 14px; color:';
	streng += color1;
	streng += '; background:';
	streng += color2;
	streng += ';}body{background: ';
	streng += color3;
	streng += ';}td{font-family: times new roman; font-size: 14px; color: #000000;}</style>';
	document.writeln(streng);
	</script>

<table border="0" cellspacing="0" cellpadding="0" width="500">
		<form name="form" target="_blank">
	<tr>
		<td>
		<select name="showoff" id="showoff" size="3" width="200" onChange="show(document.form.showoff)">
			<option value="">欢迎你的到来</option>
			<option value="http://www.k688.com">网络时空</option>
		</select>
		</td>
	</tr>
	</form>
	</table>