function wAddBtEffect(){
	
	wQuery("img.ast-bt-effect").each(function(i){
		if (wQuery(this).hasClass("ast-bt-effect-active")){
			wQuery(this).css({ 'opacity': '0.3' });
			wQuery(this).parent().siblings().css({ 'opacity': '0.3' });
		} else {
			wQuery(this).hover(
			  function () {
			    wQuery(this).toggleClass("ast-img-hover").stop().animate({
				    'opacity' : '0.7'
				  }, 50 );
			  }, 
			  function () {
			    wQuery(this).toggleClass("ast-img-hover").stop().animate({
				    'opacity' : '1'
				  }, 50 );
			  }
			);			
			
		}
	});
}


function wSubNav(elt){
		if (elt.length > 0 ){
			//var css_class = '.' + elt.attr('class');
			var css_class = elt.selector;
			wQuery(".ast-subnav ul.ast-subnav-l1 li:not("+css_class+") ul.ast-subnav-l2").each(function(){
				wQuery(this).hide();
			});
			//wQuery(".ast-subnav ul.ast-subnav-l1 li"+css_class).toggleClass("ast-selected");
			wQuery(".ast-subnav ul.ast-subnav-l1 li"+css_class).toggleClass("ast-open");
			if(wQuery(".ast-subnav ul.ast-subnav-l1 li"+css_class).find("ul").length == 0){
				wQuery(".ast-subnav ul.ast-subnav-l1 li"+css_class).toggleClass("ast-unfoldable");
			}
		}else {
			wQuery(".ast-subnav ul.ast-subnav-l1 ul.ast-subnav-l2").each(function(){
				wQuery(this).hide();
			});
		}
}