var hidetimer = 0;
function show(){
	cancelhide();
	var ddgal = document.getElementById('ddgal');
	ddgal.style.visibility = 'visible';
}
function hidemenu(){
	document.getElementById('ddgal').style.visibility = 'hidden';
}
function hide(){
	hidetimer = window.setTimeout(hidemenu, 300);
}
function cancelhide(){
	if(hidetimer){
		window.clearTimeout(hidetimer);
		hidetimer = null;
	}
}
function check(){
	if(document.getElementById('id').value == ''){
		if(document.getElementById('picture').value == '' || document.getElementById('picture').value == null){
			alert('Please select an image to upload.');
			return false;
		}
	}
}