function $(id) { return document.getElementById(id); }
//»¬¶―ΓΕ
function zMCho(elId, elC, elName, bCss, tCss, num){
var tabArray = $(elId).getElementsByTagName(elName);
for (i=0; i<tabArray.length; i++){
tabArray[i].className = bCss;
$(elC+i).style.display = "none";
}
tabArray[num].className = tCss;
$(elC+num).style.display = "block";
}
function classNormal(){
var focusBtnList = $('focus_change_btn').getElementsByTagName('li');
for(var i=0; i<focusBtnList.length; i++) {
focusBtnList[i].className='';
}
}