popup = null;

function popupClear(url, w, h) {
	if(popup)
		popup.close();
	popup = window.open(url, "top", 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width='+w+',height='+h+',left=100,top=100');
	popup.focus();
}

function popupFull(url, w, h) {
	if(popup)
		popup.close();
	popup = window.open(url, "top", 'toolbar=1,scrollbars=1,location=1,statusbar=1,menubar=1,resizable=1,width='+w+',height='+h+',left=100,top=100');
	popup.focus();
}

function confirmRedirect(message, url){
	if(confirm(message)){
		location.href = url;	
	}
}

function showHide(id){
	el = document.getElementById(id);
	if(el.style.display == '')
		el.style.display = 'none';	
	else
		el.style.display = '';	
}