var menuObj = new Array(6);
var imgDir;

function color(obj,color) { obj.src=imgDir+"botan/"+color+".gif"; }

var OnColor = new Array(6); var OffColor = new Array(6);
OnColor[0]='about_1';OffColor[0]='about_2';OnColor[1]='circus_1';OffColor[1]='circus_2';
OnColor[2]='cotoba_1';OffColor[2]='cotoba_2';OnColor[3]='tickets_1';OffColor[3]='tickets_2';
OnColor[4]='mail_1';OffColor[4]='mail_2';OnColor[5]='dayory_1';OffColor[5]='dayory_2';

function initColor(dir){
 menuObj[0] = document.getElementById('menu0');menuObj[1] = document.getElementById('menu1');
 menuObj[2] = document.getElementById('menu2');menuObj[3] = document.getElementById('menu3');
 menuObj[4] = document.getElementById('menu4');menuObj[5] = document.getElementById('menu5');
 imgDir=dir;
}
function changeColor(num,mode){
 if(mode=='on') color(menuObj[num],OnColor[num]);
 else color(menuObj[num],OffColor[num]);
}