var numLinks = 5;
var element = null;

function clickUp( id, oddEven )
{
	hideLinks();
	element = document.getElementById( id );
	element.style.display = 'block';
	CngClass( "link" + id + "_link", "link " + oddEven + " active" );
}

function hideLinks()
{
	oddEven = 'odd';
	for ( i = 1; i <= numLinks; i++ )
	{
		element = document.getElementById( "link" + i );
		element.style.display = 'none';
		CngClass( "link" + i + "_link", "link " + oddEven );
		if ( oddEven == 'odd' ) {
			oddEven = 'even';
		}
		else {
			oddEven = 'odd';
		}
	}
}

function CngClass( id, nc ) {
	var obj = document.getElementById( id );
	if (!obj.cngclass) {
		obj.cngclass=obj.className;
	}
	if (obj.className==nc) {
		obj.className=obj.cngclass;
	}
	else {
		obj.className=nc;
	}
}