/*select*/
function selectOpen(flag){
	if(flag){
		document.getElementById('select0').style.display='block';
	}
	else{
		document.getElementById('select0').style.display='none';	
	}
}

document.onmousedown = function(ev) {
	var ev = ev || window.event;
	var target = ev.target || ev.srcElement;
	if (target && target.name == 'button' ) { 
		selectOpen(true);
	}else{
		while(target.parentNode&&(target.id!="select0")){
			target=target.parentNode;
		}
		if(!target.parentNode)selectOpen(false);
	}
}