var lastSlideItemDisplayed=0;var visibleSlideItemCssClass;var hiddenSlideItemCssClass;var slideItems=[];var slideItems2Display;function initSlide(items2Display,containerElementId,visibleCssClass,hiddenCssClass){slideItems2Display=Number(items2Display);slideItems2Display--;var allDivs=document.getElementById(containerElementId).getElementsByTagName("div");var j=0;for(var i=0;i<allDivs.length;i++){if(allDivs[i].className==visibleCssClass){slideItems[j++]=allDivs[i];}}
visibleSlideItemCssClass=visibleCssClass;hiddenSlideItemCssClass=hiddenCssClass;for(var i=0;i<slideItems.length;i++){if(i<=slideItems2Display){slideItems[i].className=visibleSlideItemCssClass;lastSlideItemDisplayed=Number(i);}else{slideItems[i].className=hiddenSlideItemCssClass;}}}
function slideBackward(){var newItem=lastSlideItemDisplayed-(slideItems2Display+Number(1));if(newItem>=0){slideItems[newItem].className=visibleSlideItemCssClass;slideItems[lastSlideItemDisplayed].className=hiddenSlideItemCssClass;lastSlideItemDisplayed--;}}
function slideForward(){if(lastSlideItemDisplayed+1!=slideItems.length){var beginItem=lastSlideItemDisplayed-slideItems2Display;slideItems[beginItem].className=hiddenSlideItemCssClass;var newItem=lastSlideItemDisplayed+1;slideItems[newItem].className=visibleSlideItemCssClass;lastSlideItemDisplayed++;}}