var classes=new Array('azure', 'sea', 'teal');

function showBox(x)
{
	targetBlock = x+"block";
	for(i=0;i<classes.length;i++)
	{
		thisBlock = classes[i]+"block";
		if(document.getElementById(thisBlock).className == 'hide' && thisBlock==targetBlock)
		{
			document.getElementById(thisBlock).className = 'show';
		} else {
			document.getElementById(thisBlock).className = 'hide';
		}
	}
}