function displayLabel(label){
	var labelDiv = document.getElementById("labelDiv");
	labelDiv.innerHTML = label;
}

function hideLabel(){
	var labelDiv = document.getElementById("labelDiv");
	labelDiv.innerHTML = "";
}

// Determine if the desc button should display
function checkDescButton(id){
	if(document.getElementById("photoDesc-" + id)){
		//document.getElementById("descButton").style.visibility = 'visible';
	}else{
		//document.getElementById("descButton").style.visibility = 'hidden';
	}
}
var descDivOpen = false;
function toggleDesc(id){
	var descContentDiv = document.getElementById("photoDesc-" + id);
	var descDiv = document.getElementById("descDiv");
	var descButton = document.getElementById("descButton");
	//on or off?
	if(descDivOpen){
		// close
		descButton.innerHTML = "+";
		descDiv.innerHTML = "";
		descDiv.style.visibility = 'hidden';
		descDivOpen = false;
	}else{
		// open
		if(descContentDiv){
			descDiv.innerHTML = descContentDiv.innerHTML;
		}
		descButton.innerHTML = "-";
		descDiv.style.visibility = 'visible';
		descDivOpen = true;
	}
	
}
var commentDivOpen = false;
function toggleCommentForm(){
	var commentDiv = document.getElementById("commentFormDiv");
	var commentButton = document.getElementById("commentButton");
	//on or off?
	if(commentDivOpen){
		// close
		commentButton.innerHTML = "c";
		commentDiv.style.visibility = 'hidden';
		commentDivOpen = false;
	}else{
		commentButton.innerHTML = "-";
		commentDiv.style.visibility = 'visible';
		commentDivOpen = true;
	}
}

function cacheImages(prefix, imgIds){
  if (document.images){
    for(var i = 0; i < imgIds.length; ++i){
      var img = new Image();
      img.src = "/photography/photos/" + prefix + "-" + imgIds[i] + ".jpg";
    }
  }
}