// media gallery 
$(document).ready(function(){ 
	$('.media_gall').after('<div class="spacer"/><div class="media_nav"><img src="images/bg/prev.jpg" alt="" class="prev" /><img src="images/bg/next.jpg" alt="" class="next" /></div>');
	$('.prev').hide();
	NumbOfImg = $('.media_gall a').size();
	NumbOfImg%2==0 ? MediaUlWid=NumbOfImg*73.5 : MediaUlWid=(NumbOfImg+1)*73.5;
	$('.media_gall ul').width(MediaUlWid);
	var curLeftMedia = 0;
	var mov = 1;
	$('.next').click(function(){
		if(mov) {
			mov = 0;
			curLeftMedia++;
			if(curLeftMedia>=NumbOfImg/2-3) $(this).hide();
			$('.prev').show();
			MediaUl = $('.media_gall ul');					  
			margLeft = 1 - curLeftMedia * 137;
			MediaUl.animate({left: margLeft},function(){mov = 1;});
		}
	});
	$('.prev').click(function(){
		if(mov) {
			$('.next').show();
			curLeftMedia--;
			if(curLeftMedia<=0) $(this).hide();
			MediaUl = $('.media_gall ul');					  
			margLeft = 1 - curLeftMedia * 137;
			MediaUl.animate({left: margLeft},function(){mov = 1;});
			mov = 0;
		}
	});
});