/**
 * display and hide layers to view parts of the page
 */
function displayLayer(id)
{
	var obj = window.document.getElementById(id)
	if(eval('obj.style.display') == 'block')
		obj.style.display = 'none';
	else
		obj.style.display = 'block';
} // displayLayer

function displayLayerChangeOpenClose(id, imgid)
{
	displayLayer(id);
	if(document.getElementById(imgid).src.lastIndexOf('plus-open.gif') > 0)
	{ 
		document.getElementById(imgid).src='/redsys/images/minus-close.gif';
	}
	else
	{
		document.getElementById(imgid).src='/redsys/images/plus-open.gif';
	}
}

function visibleLayer(id)
{
	var obj = window.document.getElementById(id);
	if(eval('obj.style.visibility') == 'visible' || eval('obj.style.visibility') == '')
	{
		obj.style.visibility = 'hidden';
	}
	else
	{
		obj.style.visibility = 'visible';
	}
}

function setFocus(id)
{
	window.document.getElementById(id).focus();
}