function showSpans()
{ 
	
	if(document.getElementById('spanParent').className == 'showspans')
	{
		document.getElementById('spanParent').className = 'hidespans';
	} else {
		document.getElementById('spanParent').className = 'showspans';
	}
	//document.getElementById('spanParent').className=show?'showspans':'hidespans';
	
}

function show_titles()
{
	// set titles and body sizes
	document.getElementById('titles').style.height = 300; 
	document.getElementById('body').style.height = 400;	

	
	
}