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ahitrov |
/* |
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Litebox JS by Alexander Shabuniewicz - http://aether.ru |
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2006-08-18 |
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inspired by Lightbox JS - Lokesh Dhakar - http://www.huddletogether.com |
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and portfolio script of Cameron Adams - http://portfolio.themaninblue.com |
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*/ |
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var imgNext; |
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var imgPrev; |
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var nLiteboxActive = 0; |
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function showBox(theTarget) { |
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if ( nLiteboxActive == 1 ) { |
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return; |
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} else { |
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nLiteboxActive = 1; |
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} |
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var theBody = document.getElementsByTagName('body')[0]; |
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var pageCoords = getPageCoords(); |
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var theShadow = document.createElement('div'); |
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theShadow.id = 'shadow'; |
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theShadow.style.height = (pageCoords[1] + 'px'); |
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theShadow.className = 'on'; |
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selects = document.getElementsByTagName("select"); |
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for (i = 0; i != selects.length; i++) { |
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selects[i].style.visibility = "hidden"; |
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} |
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theBody.insertBefore(theShadow, theBody.firstChild); |
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var theLoading = document.createElement('div'); |
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theLoading.id = 'loading'; |
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theLoading.style.top = parseInt(pageCoords[2] + (pageCoords[0] - 55) / 2) + 'px'; |
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theLoading.onclick = function() { closeBox(); } |
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theShadow.appendChild(theLoading); |
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var imgPreload = new Image(); |
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imgPreload.onload = function() { |
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var theBox = document.createElement('div'); |
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theBox.id = 'litebox'; |
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theBox.style.width = imgPreload.width + 10 + 'px'; |
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theBox.style.marginTop = parseInt(pageCoords[2] + (pageCoords[0] - imgPreload.height - 50) / 2) + 'px'; |
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var theImage = document.createElement('img'); |
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theImage.src = theTarget.href; |
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theImage.alt = theTarget.title; |
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theImage.width = imgPreload.width; |
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theImage.onclick = function() { closeBox(); } |
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theImage.title = "Click to close this image"; |
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var theCaption = document.createElement('p'); |
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theCaption.className = 'litebox-caption'; |
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theCaption.innerHTML = (theImage.alt) ? '<b>' + theImage.alt + '</b><br>' : ''; |
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theCaption.innerHTML += '<span style="color:#a0a0a0">Щелкните указателем мыши по фотографии<br>или нажмите клавишу «Esc», чтобы завершить просмотр</span>'; |
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var allThumbs = new Array(); |
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var allLinks = document.getElementsByTagName('a'); |
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var linkLen = allLinks.length; |
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for (i=0,j=0; i<linkLen; i++) { |
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if (allLinks[i].getAttribute('rel') == 'lightbox') { |
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allThumbs[j++] = allLinks[i]; |
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} |
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} |
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linkLen = allThumbs.length; |
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for (i=0; i<linkLen; i++) { |
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if (allThumbs[i].href == theTarget.href) { |
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if (allThumbs[i-1]) { |
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var thePrevLink = document.createElement('a'); |
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thePrevLink.className = 'prev'; |
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thePrevLink.title = allThumbs[i-1].title; |
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thePrevLink.href = allThumbs[i-1].href; |
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thePrevLink.onclick = function() { closeBox(); showBox(this); return false; } |
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theCaption.insertBefore(thePrevLink, theCaption.firstChild); |
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imgPrev = allThumbs[i-1]; |
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} |
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if (allThumbs[i+1]) { |
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var theNextLink = document.createElement('a'); |
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theNextLink.className = 'next'; |
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theNextLink.title = allThumbs[i+1].title; |
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theNextLink.href = allThumbs[i+1].href; |
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theNextLink.onclick = function() { closeBox(); showBox(this); return false; } |
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theCaption.insertBefore(theNextLink, theCaption.firstChild); |
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imgNext = allThumbs[i+1]; |
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} |
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} |
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} |
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theShadow.removeChild(theLoading); |
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theBox.appendChild(theImage); |
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theBox.appendChild(theCaption); |
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theShadow.appendChild(theBox); |
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document.onkeypress = getKey; |
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return false; |
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} |
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imgPreload.src = theTarget.href; |
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} |
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function getPageCoords() { |
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var coords = [0, 0, 0]; // height of window, document, scroll pos |
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// all except IE |
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if (window.innerHeight) { |
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coords[0] = window.innerHeight; |
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coords[2] = window.pageYOffset; |
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} |
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// IE 6 Strict |
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else if (document.documentElement && document.documentElement.clientHeight != 0) { |
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coords[0] = document.documentElement.clientHeight; |
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coords[2] = document.documentElement.scrollTop; |
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} |
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else if (document.body) { |
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coords[0] = document.body.clientHeight; |
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coords[2] = document.body.scrollTop; |
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} |
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var test1 = document.body.scrollHeight; |
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var test2 = document.body.offsetHeight; |
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if (test1 > test2) { |
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coords[1] = document.body.scrollHeight; |
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} else { |
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coords[1] = document.body.offsetHeight; |
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} |
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if (coords[1] < coords[0]) coords[1] = coords[0]; |
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return coords; |
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} |
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function closeBox() { |
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var theBody = document.getElementsByTagName('body')[0]; |
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var theBox = document.getElementById('litebox'); |
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if (theBox) theBox.style.display = 'none'; |
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var theShadow = document.getElementById('shadow'); |
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if (theShadow) theShadow.style.display = 'none'; |
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theBody.removeChild(theShadow); |
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selects = document.getElementsByTagName('select'); |
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for (i = 0; i != selects.length; i++) { |
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selects[i].style.visibility = 'visible'; |
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} |
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document.onkeypress = ''; |
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imgPrev = imgNext = ''; |
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nLiteboxActive = 0; |
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return false; |
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} |
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function getKey(e) { |
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var arrowImg; |
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if (!e) var e = window.event; |
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var keycode = e.keyCode ? e.keyCode : e.which; |
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switch (keycode) { |
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case 27: // esc |
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case 32: // spacebar |
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closeBox(); |
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break; |
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case 37: // <- |
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arrowImg = imgPrev ? imgPrev : ''; |
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break; |
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case 39: // -> |
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arrowImg = imgNext ? imgNext : ''; |
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} |
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if (arrowImg) { closeBox(); showBox(arrowImg); } |
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return false; |
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} |
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function initLitebox() { |
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if (!document.getElementsByTagName) { return; } |
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var anchors = document.getElementsByTagName('a'); |
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for (i=0,len=anchors.length; i<len; i++){ |
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var anchor = anchors[i]; |
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if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == 'lightbox')) { |
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anchor.onclick = function() { showBox(this); return false; } |
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} |
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} |
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anchor = null; |
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} |
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function addLoadEvent(func) { |
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var oldonload = window.onload; |
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if (typeof window.onload != 'function') { |
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window.onload = func; |
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} else { |
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window.onload = function() { |
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oldonload(); |
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func(); |
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} |
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} |
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} |
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addLoadEvent(initLitebox); |
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