function toogle(divID) 
 {
 	var item = document.getElementById(divID);
 	if (item) 
 	{
 		item.className=(item.className=='hidden')?'unhidden':'hidden';
 	}
 }

 function unhidden(divID) 
 {
 	var item = document.getElementById(divID);
 	if (item) 
 	{
 		if (item.className == 'hidden')
 			item.className='unhidden';
 	}
 }

 function hidden(divID) 
 {
 	var item = document.getElementById(divID);
 	if (item) 
 	{
 		if (item.className == 'unhidden')
 			item.className='hidden';
 	}
 }


 function unselect(divID) 
 {
 	var item = document.getElementById(divID);
 	if (item) 
 	{
 		if (item.className == 'select')
 			item.className='unselect';
 	}
 }

 function select(divID) 
 {
 	var item = document.getElementById(divID);
 	if (item) 
 	{
 		if (item.className == 'unselect')
 			item.className='select';
 	}
 }


 function showSmall(id) 
 {
 	//hide all
 	var i=0;
	for (i=0;i<=12;i++)
	{
		hidden('small_advertising_' + i);
		hidden('small_editorial_' + i);
		hidden('small_event_' + i);
		hidden('small_humour_' + i);

		unselect('thumb_small_advertising_' + i);
		unselect('thumb_small_editorial_' + i);
		unselect('thumb_small_event_' + i);
		unselect('thumb_small_humour_' + i);
	}

	select('thumb_' + id);
	unhidden(id);
 }
 
 function showLarge(id) 
 {
 	//hide all
 	var i=0;
	for (i=0;i<=12;i++)
	{
		hidden('large_advertising_' + i);
		hidden('large_editorial_' + i);
		hidden('large_event_' + i);
		hidden('large_humour_' + i);
	}

	unhidden(id);
 }
 
 function hideLarge(id, smallID) 
 {
 	//hide all
 	var i=0;
	for (i=0;i<=12;i++)
	{
		hidden('large_advertising_' + i);
		hidden('large_editorial_' + i);
		hidden('large_event_' + i);
		hidden('large_humour_' + i);
	}

	showSmall(smallID);
 }
 
 
 
 function showCategory(category) 
 { 
	if (category == 'advertising')
	{
		unhidden('category_advertising');
		showSmall('small_advertising_0');
	}
	else
	{
		hidden('category_advertising');
	}
	
	if (category == 'editorial')
	{
		unhidden('category_editorial');
		showSmall('small_editorial_0');
	}
	else
	{
		hidden('category_editorial');
	}
	
	if (category == 'event')
	{
		unhidden('category_event');
		showSmall('small_event_0');
	}
	else
	{
		hidden('category_event');
	}
	if (category == 'humour')
	{
		unhidden('category_humour');
		showSmall('small_humour_0');
	}
	else
	{
		hidden('category_humour');
	}
}