function ToggleDisplay(obj)
{
	target = document.getElementById(obj);
	targetDisplay = target.style.display;
	
	switch(targetDisplay)
	{
		case 'block':
		target.style.display=('none');
		break;
		
		case 'none':
		target.style.display=('block');
		break;
		
		default:
		break;
	}
}

function ToggleHeight(obj) {
    target = document.getElementById(obj);
    targetHeight = target.style.height;

    switch (targetHeight) {
        case '0px':
            target.style.height = "300px";
            break;

        case "300px":
            target.style.height = ('0px');
            break;

        default:
            break;
    }
}

function ToggleExpansion(obj)
{
	target = document.getElementById(obj);
	targetText = target.innerHTML;
	
	if(targetText == '+')
	{
		target.innerHTML = '-';
	}
	else
	{
		target.innerHTML = '+';
	}
}