function show(id) {
	document.getElementById(id)
	document.getElementById(id).style.visibility = 'visible';
} 

function hide(id) {
	document.getElementById(id).style.visibility = 'hidden';
}

function toggleDiv(divid){
	var div = document.getElementById(divid);
	div.style.display = div.style.display == 'block' ? 'none' : 'block';
	}
	
function randomImage(imageName, imageOrientation, imageLocation) {
	var imageNumber = 0;
	var returnImage = "";
	var returnSource = "";

  	if (imageOrientation == 'landscape') {
  		imageNumber = Math.floor(35*Math.random());
		if (imageNumber < 10) {
			if (imageLocation == 'sub') {
				returnImage = document.images[imageName].src="../images/random/landscape/jns00" + imageNumber + ".jpg";
			}
			else {
				returnImage = document.images[imageName].src="images/random/landscape/jns00" + imageNumber + ".jpg";
			}
		}
		else {
			if (imageLocation == 'sub') {
				returnImage = document.images[imageName].src="../images/random/landscape/jns0" + imageNumber + ".jpg";
			}
			else {
				returnImage = document.images[imageName].src="images/random/landscape/jns0" + imageNumber + ".jpg";
			}
		}  	
  	}
  	else {
  		imageNumber = Math.floor(7*Math.random());
  		if (imageNumber < 10) {
  			if (imageLocation == 'sub') {
				returnImage = document.images[imageName].src="../images/random/portrait/jns00" + imageNumber + ".jpg";
			}
			else {
				returnImage = document.images[imageName].src="images/random/portrait/jns00" + imageNumber + ".jpg";
			}
		}
		else {
 			if (imageLocation == 'sub') {
				returnImage = document.images[imageName].src="../images/random/portrait/jns0" + imageNumber + ".jpg";
			}
			else {
				returnImage = document.images[imageName].src="images/random/portrait/jns0" + imageNumber + ".jpg";
			}
		}
  	}
	//return the result
	if (imageLocation == 'sub') {
		returnSource = '<img align="middle" border="0" name="' + imageName + '" src="' + returnImage + '" >';
	}
	else {
		returnSource = '<img align="middle" border="0" name="' + imageName + '" src="' + returnImage + '" >';
	}
	return returnSource;
}