// this is for dealing with folders - the subfolders drop down when the plus is clicked on
function checkFolder(folderno,main) {
	var folderno = folderno;
	folder = 'folder' + folderno;
    folderexists = document.getElementById(folder);
	expandimg = 'expand' + folderno;
	if (folderexists != null) {
		if (document.getElementById(folder).style.display == "block") {
   			document.getElementById(folder).style.display = "none";
			if (main == "1") {
				document.getElementById(expandimg).style.backgroundImage = 'url(/res/images/layout/plus_main.gif)';
			} else {
				document.getElementById(expandimg).style.backgroundImage = 'url(/res/images/layout/plus_sub.gif)';
			}
		} else {
   			document.getElementById(folder).style.display = "block";
			if (main == "1") {
				document.getElementById(expandimg).style.backgroundImage = 'url(/res/images/layout/minus_main.gif)';
			} else {
				document.getElementById(expandimg).style.backgroundImage = 'url(/res/images/layout/minus_sub.gif)';
			}
		}
	}
}

// this opens any numbered div
function checkDiv(divno) {
	var divno = divno;
	div = 'div' + divno;
    divexists = document.getElementById(div);
	if (divexists != null) {
		if (document.getElementById(div).style.display == "block") {
   			document.getElementById(div).style.display = "none";
		} else {
   			document.getElementById(div).style.display = "block";
		}
	}
}