// Funzione che apre un div e chiude tutti gli altri //
function THISonTHAToff(code) {

    ff = document.getElementsByTagName("div");
    for (i = 0; i < ff.length; i++) {
        if (ff[i].id.substr(0,5)=="onOff") {
            ff[i].style.display = "none";
        }
    }   
    for (i = 0; i < ff.length; i++) {
        if (ff[i].id == code) {
            if (ff[i].style.display == "none") {
                ff[i].style.display = "";
            }
        }
    }
}

// Funzione che apre e chiude un div cliccando sul link //
function THISonTHISoff(code) {
    ff = document.getElementById(code);
		if (ff.style.display == "") {
			ff.style.display = "none";
		} else
		if (ff.style.display == "none") {
			ff.style.display = "";
		}
}

// Funzione che apre la popup //
function Popup(url, stile) {
	window.open(url, "", stile);
}
	
// Cambia classe //
function classChange(element,newclass) 
{
	document.getElementById(element).className = newclass;
}



$(function() {
		//scrollpane parts
		var scrollPane = $('.galleryWrapper');
		var scrollContent = $('.galleryItems');
		
		//build slider
		var scrollbar = $(".scroll-bar").slider({
			slide:function(e, ui){
				if( scrollContent.width() > scrollPane.width() ){ scrollContent.css('margin-left', Math.round( ui.value / 100 * ( scrollPane.width() - scrollContent.width() )) + 'px'); }
				else { scrollContent.css('margin-left', 0); }
			}
		});
		
		//append icon to handle
		var handleHelper = scrollbar.find('.ui-slider-handle')
		.mousedown(function(){
			scrollbar.width( handleHelper.width() );
		})
		.mouseup(function(){
			scrollbar.width( '100%' );
		})
		.append('<span class="ui-icon ui-icon-grip-dotted-vertical"></span>')
		.wrap('<div class="ui-handle-helper-parent"></div>').parent();
		
		//change overflow to hidden now that slider handles the scrolling
		scrollPane.css('overflow','hidden');
		
		//size scrollbar and handle proportionally to scroll distance
		function sizeScrollbar(){
			var remainder = scrollContent.width() - scrollPane.width();
			//var proportion = remainder / scrollContent.width();
			var handleSize = 50;
			scrollbar.find('.ui-slider-handle').css({
				width: handleSize,
				'margin-left': -handleSize/2
			});
			handleHelper.width('').width( scrollbar.width() - handleSize);
		}
		
		//reset slider value based on scroll content position
		function resetValue(){
			var remainder = scrollPane.width() - scrollContent.width();
			var leftVal = scrollContent.css('margin-left') == 'auto' ? 0 : parseInt(scrollContent.css('margin-left'));
			var percentage = Math.round(leftVal / remainder * 100);
			scrollbar.slider("value", percentage);
		}
		//if the slider is 100% and window gets larger, reveal content
		function reflowContent(){
				var showing = scrollContent.width() + parseInt( scrollContent.css('margin-left') );
				var gap = scrollPane.width() - showing;
				if(gap > 0){
					scrollContent.css('margin-left', parseInt( scrollContent.css('margin-left') ) + gap);
				}
		}
		
		//change handle position on window resize
		$(window)
		.resize(function(){
				resetValue();
				sizeScrollbar();
				reflowContent();
		});
		//init scrollbar size
		setTimeout(sizeScrollbar,10);//safari wants a timeout
	});