| <HTML> <HEAD> <TITLE>魅せるホームページ作成講座</TITLE> </HEAD> <BODY> <FORM> <INPUT type=checkbox name="c1">赤<BR> <INPUT type=checkbox name="c1">青<BR> <INPUT type=checkbox name="c1">緑<BR> <INPUT type=checkbox name="c1">黄色<BR> <INPUT type=checkbox name="c1">白<BR> <INPUT type=checkbox name="c1">黒<BR> <BR> <INPUT type=button value="全てOn" onClick="all_on(this.form.c1)"> <INPUT type=button value="全てOff" onClick="all_off(this.form.c1)"> </FORM><SCRIPT language="JavaScript"> <!-- function all_on(chk){ for (i = 0; i < chk.length; i++) { chk[i].checked = true; } } function all_off(chk){ for (i = 0; i < chk.length; i++) { chk[i].checked = false; } } // --> </SCRIPT> </BODY> </HTML> |