<SCRIPT LANGUAGE="JavaScript">
<!-------------------------------------------
function brack(){
document.bgColor="#000000"
}
function white(){
document.bgColor="#ffffff"
}
function blue(){
document.bgColor="#6633ff"
}
function red(){
document.bgColor="#ff6666"
}
function yellow(){
document.bgColor="#ffff66"
}
//------------------------------------------>
</SCRIPT>
<FORM NAME="c_change">
<INPUT TYPE="button" VALUE="白い背景" onClick="white()">
<INPUT TYPE="button" VALUE="黒い背景" onClick="brack()">
<INPUT TYPE="button" VALUE="青い背景" onClick="blue()">
<INPUT TYPE="button" VALUE="赤い背景" onClick="red()">
<INPUT TYPE="button" VALUE="黄色い背景" onClick="yellow()">
</FORM>
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