jQuery(document).ready(function(){
	var btn_images = new Object;
	
	jQuery('input.btn_rollover').hover(
		function(){
			var this_id = jQuery(this).attr('id');
			btn_images[ this_id ] = jQuery(this).attr('src');
			jQuery(this).attr('src', jQuery('#'+this_id+'_over').attr('src'));
		},
		function(){
			var this_id = jQuery(this).attr('id');
			jQuery(this).attr('src', btn_images[ this_id ]);
		}
	); 
	
	
});

function next_month(selected_month, current_month)
{
	// hide current month
	jQuery('#month_name_'+selected_month).hide();
	jQuery('#month_'+selected_month).hide();
	
	var next_month = parseInt(selected_month)+1;
	if(next_month == 13)
	{
		next_month = 1;
	}
	
	// show next month
	jQuery('#month_name_'+next_month).show();
	jQuery('#month_'+next_month).show();
	
}

function prev_month(selected_month, current_month)
{
	// hide current month
	jQuery('#month_name_'+selected_month).hide();
	jQuery('#month_'+selected_month).hide();
	
	var prev_month = parseInt(selected_month)-1;
	if(prev_month == 0)
	{
		prev_month = 12;
	}
	
	// show next month
	jQuery('#month_name_'+prev_month).show();
	jQuery('#month_'+prev_month).show();
	
}