var currentBillboard = 0; var fadeTo = 1; var fadeSource = 'Back';
function shiftContent(fadeTo, currentBillboard) {
	if(fadeTo == 1) { jQuery("#billboardBack").css("z-index", "50"); }
	loadingSlide = 1;
	jQuery(".currentBillboard").html(currentBillboard + 1);
	jQuery("#billboardFront").fadeTo(1500, fadeTo+'.0', function() {
		loadingSlide = 0;
		if(fadeTo == 0) { jQuery("#billboardBack").css("z-index", "150"); }
	});
}
function generateTab(tab) {
	billboardBackground = billboards[tab]['background'];
	billboardText = billboards[tab]['text'];
	billboardImage = billboards[tab]['image'];
	billboardNav = billboards[tab]['nav'];
}
function clickArrowRight() {
	if (loadingSlide == 1) { return false; }
	currentBillboard = currentBillboard + 1;
	if(currentBillboard == billboards.length) { currentBillboard = 0; }
	generateTab(currentBillboard);
	if(fadeTo == 1) { fadeTo = 0; fadeSource = 'Back'; }
	else if(fadeTo == 0) { fadeTo = 1; fadeSource = 'Front'; }
	jQuery("#billboard"+fadeSource+" > .billboardText").css("background-image", "url("+billboardBackground+")");
	jQuery("#billboard"+fadeSource+" > .billboardText > .billboardTextContainer").html(billboardText);
	jQuery("#billboard"+fadeSource+" > .billboardImage").html(billboardImage);
	jQuery("#billboard"+fadeSource+" > .billboardNavigationBkgd").css("background-image", "url("+billboardNav+")");	
	shiftContent(fadeTo, currentBillboard);
}
function clickArrowLeft() {
	if (loadingSlide == 1) { return false; }
	currentBillboard = currentBillboard - 1;
	if(currentBillboard < 0) { currentBillboard = billboards.length - 1; }
	generateTab(currentBillboard);
	if(fadeTo == 1) { fadeTo = 0; fadeSource = 'Back'; }
	else if(fadeTo == 0) { fadeTo = 1; fadeSource = 'Front'; }
	jQuery("#billboard"+fadeSource+" > .billboardText").css("background-image", "url("+billboardBackground+")");
	jQuery("#billboard"+fadeSource+" > .billboardText > .billboardTextContainer").html(billboardText);
	jQuery("#billboard"+fadeSource+" > .billboardImage").html(billboardImage);
	jQuery("#billboard"+fadeSource+" > .billboardNavigationBkgd").css("background-image", "url("+billboardNav+")");
	shiftContent(fadeTo, currentBillboard);
}