function photoChange(n){
	var ph_num = 4;
	for(i=0;i<ph_num;i++){
		if(i==n){
			document.getElementById("photo"+i).style.display = "block";
//			document.getElementById("thumbs"+i).className = "active";
		}else{
			document.getElementById("photo"+i).style.display = "none";
//			document.getElementById("thumbs"+i).className = "";
		}
	}
}

function photoCheck(){
	var ph_num = 4;
	for(i=0;i<ph_num;i++){
			document.getElementById("photo"+i).style.display = "block";
	}
}