function color_image(id,img){
	$(img).attr('src',settings.base_url+'system/application/assets/first_page_gallery/'+id+'/'+id+'_thumb.jpg');
}

function grey_image(id,img){
	$(img).attr('src',settings.base_url+'system/application/assets/first_page_gallery/'+id+'/'+id+'_grey_thumb.jpg');
}