function activetab(tab, code){
	showtab('dvExpert1', code=='dvExpert1');
	showtab('dvExpert2', code=='dvExpert2');
	showtab('dvExpert3', code=='dvExpert3');
	var ele=tab.parentNode;
	for(var i=0;i<ele.children.length;i++){
		ele.children[i].className='normal';
	}
	tab.className='active';
}
function showtab(code, show){
	$(code).style.display=show?"block":"none";
}
function changeTab(tab, code){
	showtab('dvAcc1', code=='dvAcc1');
	showtab('dvAcc2', code=='dvAcc2');
	var ele=tab.parentNode;
	for(var i=0;i<ele.children.length;i++){
		ele.children[i].className='normal';
	}
	tab.className='active';
}
function changeBrand(tab, code){
	showtab("dvBrand1", code=="dvBrand1");
	showtab("dvBrand2", code=="dvBrand2");
	showtab("dvBrand3", code=="dvBrand3");
	
}