function deleteLink(linkNum,type) {
	var answer = confirm("Are you sure you want to delete this link?");
	if (confirm) {
		location.replace("linkManagement.php?task=delete&link="+linkNum+"&type="+type);
	}
	else {
		return false;	
	}
}

function moveLink(linknum,direction) {
	url="linkManagement.php?task=move&link="+linknum+"&direction="+direction;
	sendAndLoad(url,reloadLinks);
}

function showAddLink() {
	eval(this.req.responseText);
}

function reloadLinks() {
	location.replace("edit.php?info=resources");	
}

function addLink(div) {
	url = "showAddLink.php?div="+div;
	sendAndLoad(url,showAddLink);
}

function submitLink(form_name) {
	for (var i=0; i < form_name.urltype.length; i++) {
		if (form_name.urltype[i].checked) {
			var urltype_val = form_name.urltype[i].value;
		}
	}
	
	if(urltype_val=="internal") {
		if(isEmpty(form_name.inFile)) {
			alert("You must press the 'browse' button (or 'choose file' button in Safari) and find the file you wish to upload before submitting the link.");
			return false;
		}
		else {
			return true;	
		}
	}
	else {
		if(isEmpty(form_name.target)) {
			alert("You must enter a complete URL (including the http://) before submitting the link.");
			return false;
		}
		else {
			return true;	
		}
	}
}