スクリプト

<HTML>
<HEAD>
<TITLE>Sample</TITLE>
</HEAD>
<BODY bgColor="white">
<H1>優先順位を変更します</H1>
<LAYER top="100" width="256" height="512" NAME="Nagano" bgColor="gray"> 
<H1>Nagano Layer</H1>
<BR>
</LAYER>
<LAYER top="130" width="256" height="512" NAME="Shiojiri" bgColor="Cyan"> 
<H1>Shiojiri Layer</H1>
</LAYER>
<LAYER top="160" width="256" height="512" NAME="Kataoka" bgColor="Yellow"> 
<H1>Kataoka Layer</H1>
</LAYER>
<FORM>
<INPUT TYPE="button" VALUE="奥に" onClick='document.layers["Shiojiri"].moveBelow(document.layers["Nagano"])'>
<INPUT TYPE="button" VALUE="手前に" onClick='document.layers["Nagano"].moveBelow(document.layers["Shiojiri"])'>
</FORM>
</BODY></HTML>