function select_tab(link, tab) {
	var req = new Request(
		{
		url: link,
		method: 'post',
		onSuccess: function(responseText) 
			{
			$('tabsContent').innerHTML = responseText;
			},
		onFailure: function(responseText) 
			{
			}	
		}).send();

	$('imgTab_performance').src = 'layout/images/tab_performance.jpg';
	$('imgTab_specifications').src = 'layout/images/tab_specifications.jpg';
	$('imgTab_feature').src = 'layout/images/tab_feature.jpg';
	$('imgTab_options').src = 'layout/images/tab_options.jpg';
	
	$('imgTab_' + tab).src = 'layout/images/tab_' + tab + '_selected.jpg';
}