function navStretch()
{
navHeight = document.getElementById('leftNav').offsetHeight
contentHeight = document.getElementById('content').offsetHeight
//alert(navHeight);
//alert(rightHeight);

	if (navHeight < contentHeight)
	{
	contentHeight = contentHeight - 20
	document.getElementById('leftNav').style.height = contentHeight + 'px';
	}
image = new Array

image[1]="rocket"
image[2]="racingcar"
image[3]="boat"
image[4]="car"
image[5]="aeroplane"
random_num = (Math.round((Math.random()*4)+1))
document.getElementById('content').style.backgroundImage = 'url(imgs/' + image[random_num] + '.gif)';
}
	
function confirmDelete()
	{
	return confirm('Are you sure you want to delete this item?');
	}
	
function confirmupdate()
	{
	return confirm('Are you sure you want to update this item?');
	}
	
function confirmadd()
	{
	return confirm('Are you sure you want to add this item?');
	}