$(document).ready(function(){

	var $mainSlideCounter = 7;

	$('span.mainSlideDetailDesc').hide();

	/* nahodny vyber startovaciho slidu */
	var $mainSlideActive = Math.floor(Math.random()*6+1);
	if ($mainSlideActive==5) { $mainSlideActive=7; } /* tento radek je jen kvuli vypusteni slidu 5 */
	
	/* nastaveni pocatecnich hodnot */
	var $nextSlideID = $mainSlideActive+1;
	var $nextSlide = '#mainSlidePagination0'+$nextSlideID;
	var $preSlideID = $mainSlideActive-1;
	var $preSlide = '#mainSlidePagination0'+$preSlideID;
	
	var $activePagination = '#mainSlidePagination0'+$mainSlideActive;
	var $activeSlide = '#mainSlide0'+$mainSlideActive;
	$($activePagination).css('background-image', 'url(../img/mainslide-pagination_1.png)');
	$($activeSlide).show();

	$("#mainSliderNext").click(function () {
		if ($mainSlideActive<$mainSlideCounter) { $nextSlideID = $mainSlideActive+1; }
		else { $nextSlideID = 1; }
		if ($nextSlideID==5) { $nextSlideID=6; } /* tento radek je jen kvuli vypusteni slidu 5 */
		$nextSlide = '#mainSlidePagination0'+$nextSlideID; 
		$($nextSlide).click();
	});

	$("#mainSliderPre").click(function () {
		if ($mainSlideActive>1) { $preSlideID = $mainSlideActive-1; }
		else { $preSlideID = $mainSlideCounter; }
		if ($preSlideID==5) { $preSlideID=4; } /* tento radek je jen kvuli vypusteni slidu 5 */
		$preSlide = '#mainSlidePagination0'+$preSlideID; 
		$($preSlide).click();
	});

	var $j=0;
	var $thisPagination = '';
	var $thisSlide = '';
	var $paginationID = '';
	var $thisPaginationID = '';
	var $mainSliderLoop = 1;
	var $mainSliderControl = 0;

    $(".mainSlidePagination").click(function(){
		$thisPaginationID = '#' + this.id; 

		// Jestlize jsem v dobe kliknuti na nekterem z ovladacich prvku, predpokladam ze jde o uzivatelske kliknuti a pozastavim animaci
		if ($mainSliderControl==1) { $mainSliderLoop = 0;  }

		for ($j=1;$j<=$mainSlideCounter;$j++)
		{
			$thisPagination = '#mainSlidePagination0'+$j;
			$thisSlide = '#mainSlide0'+$j;
			if ($thisPaginationID==$thisPagination)
			{
				$($thisPagination).css('background-image', 'url(../img/mainslide-pagination_1.png)');
				$($thisSlide).fadeIn(500); 
				$mainSlideActive = $j;
			}
			else
			{
				$($thisPagination).css('background-image', 'url(../img/mainslide-pagination_0.png)');
				$($thisSlide).hide(); 
			}
		}
	});

    // Nastavim promennout mainSliderControl v pripade ze je kurzor nad nekterym z ovladacich prvku, abych dokazal odlisit kliknuti volane uzivatelem od kliku volanych pres jQuery  
    $(".mainSlideControl").mouseenter(function(){
    	$mainSliderControl=1;
    });

    $(".mainSlideControl").mouseleave(function(){
    	$mainSliderControl=0;
    });

	$(function() {
	    setInterval( function() {
	    		if ($mainSliderLoop==1) {
				$("#mainSliderNext").click();
			}
		} , 20000);
	});

});