61 Zeilen
1.7 KiB
JavaScript
61 Zeilen
1.7 KiB
JavaScript
/*****************************************
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*
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* $Id$
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*
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* File : $RCSfile: addImageTags.js,v $
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* Project : Contenido
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* Descr : File contains functions vor adding label tags to images
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by javascript for smaller html documents
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*
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* Author : $Author: timo.trautmann$
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* Modified : $Date$
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*
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* © four for business AG, www.4fb.de
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******************************************/
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/**
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* Function sets alt and title tag of a html image tag
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*
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* @param object oImg - reference to corresponding image tag
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* @param string sName - labeltext to append
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*
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*/
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function setImgAltTitle (oImg, sName) {
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if (!oImg.title) {
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oImg.title = sName;
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}
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if (!oImg.alt) {
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oImg.alt = sName;
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}
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}
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/**
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* Function sets alt and title tag for all image tags in actual document
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*
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* @param array aImageTitles - assocaiative array, which contains a label for image
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aImageTitles['test.gif'] = 'This is a test'
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*
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*/
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function setImageTags (aImageTitles) {
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//get all images
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var images = document.getElementsByTagName('img');
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for (var i = 0; i < images.length; i++) {
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var sImgSrc = images[i].src;
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if (sImgSrc != '') {
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//seperate imagepath and name
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var iPos = sImgSrc.lastIndexOf('/');
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if (iPos > 0) {
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var sImgName = sImgSrc.slice(iPos+1, sImgSrc.length);
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} else {
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var sImgName = sImgSrc;
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}
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//if there is a imagetitle for actual image, set it
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if (aImageTitles[sImgName]) {
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setImgAltTitle(images[i], aImageTitles[sImgName]);
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}
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}
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}
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} |