jQuery(document).ready(function() {
	news_nav_img();
});

function news_nav_left()
{
	var left = parseInt(jQuery("#news_center > table").css('left'));
	if (left != 0)
	{
		var new_left = left+270;	
		jQuery("#news_center > table").css('left', new_left+'px');
		news_nav_img();
	}
}

function news_nav_right()
{
	var left = parseInt(jQuery("#news_center > table").css('left'));
	var width = parseInt(jQuery("#news_center > table").css('width'));
	if ((width + left) >= 541)
	{
		var new_left = left-270;	
		jQuery("#news_center > table").css('left', new_left+'px');
		news_nav_img();
	}
}
function news_nav_img()
{
	var left = parseInt(jQuery("#news_center > table").css('left'));
	var width = parseInt(jQuery("#news_center > table").css('width'));

	var left_vis = (left != 0) ? 'visible' : 'hidden';
	jQuery("#news_left a").css('visibility', left_vis);
	var right_vis = ((width+left)>=641) ? 'visible' : 'hidden';
	jQuery("#news_right a").css('visibility', right_vis);
}