var fstEl = 1;
var actEl = 1;
var delayS = 3000;
var delayA = 2000;
var szInd =  100;

var cntEl = 8;

function sdShow(N) {
	jQuery('#i'+N).css('display', 'block');
	jQuery('#i'+N).css('visibility', 'visible');
	jQuery('#i'+N).css('z-index', szInd - 1);
}

function sdHide(N) {
	jQuery('#i'+N).css('display', 'none');
	jQuery('#i'+N).css('visibility', 'hidden');
	jQuery('#i'+N).css('z-index', szInd + 2);
}

function sdLayerBack(N, act) {
	jQuery('#i'+N).css('display', 'block');
	jQuery('#i'+N).css('visibility', 'visible');
	jQuery('#i'+N).css('z-index', szInd + 1);
	sdShow(act);
}

function sdLayerLowAll() {
	for(var N = fstEl; N <= cntEl; N++) {
		sdHide(N);
	}
}


function sdAnimateHide(N) {
	jQuery('#i'+N).fadeOut(delayA);
}

function runSladeShow() {
	var nxtEl = actEl+1;
	if (nxtEl > cntEl) nxtEl = fstEl;
	
	sdLayerBack(actEl, nxtEl);
	sdAnimateHide(actEl);
	actEl = nxtEl;
}


	
function changeSlade() {
	
}