HTTPRequest for XML - only appear if there is a certain sub-child

[catoxx]

Right, Below is a simple javascript request to display the content that is in the XML Document.I have lot's of different versions of XML's that are all from the same place but some are structured slightly different, so some elements inside the KISCOURSE tag do not have a TITLE - when this happens it throws out my coding structure and makes it appear wrong.Is there a way, if TITLE is not found inside a KISCOURSE, then do not display that KISCOURSE and just move onto the next one.Just incase, For an example on how the XML Data looks, see: http://universitycompare.com/wp-content/themes/blue-and-grey/XML/london_metropolitan_university.xml\[code\]<script type="text/javascript">if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); }else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); }xmlhttp.open("GET","http://universitycompare.com/wp-content/themes/blue-and-grey/XML/london_metropolitan_university.xml",false);xmlhttp.send();xmlDoc=xmlhttp.responseXML; var x=xmlDoc.getElementsByTagName("INSTITUTION");for (i=0;i<x.length;i++)var x=xmlDoc.getElementsByTagName("KISCOURSE");for (i=0;i<x.length;i++) { document.write("<div class='CourseArea'><h3 id='CourseTitle'>"); // TITLE document.write(x.getElementsByTagName("TITLE")[0].childNodes[0].nodeValue); document.write("</h3>"); document.write("<p class='ForP'>-&nbsp;&nbsp;"); document.write(x.getElementsByTagName("MODE")[0].childNodes[0].nodeValue); document.write("</p><div class='clear'></div>"); // UCAS CODE document.write("<p id='ucascode'>"); document.write("<b>UCAS CODE</b>&nbsp;&nbsp;&nbsp;"); document.write(x.getElementsByTagName("UCASCOURSEID")[0].childNodes[0].nodeValue); document.write("</p>"); // READ MORE LIGHTBOX document.write("<img src='http://stackoverflow.com/questions/12787195/<?php echo home_url(); ?>/wp-content/themes/blue-and-grey/images/info-icon.png' width='15' style='margin:0px 2px 0px -4px;' />"); document.write("<a class='various' href='http://stackoverflow.com/questions/12787195/#ReadMore'>Read More</a>&nbsp;&nbsp;&nbsp;"); // VISIT COURSE LINK document.write("<a class='courselink' href='"); document.write(x.getElementsByTagName("CRSEURL")[0].childNodes[0].nodeValue); document.write("' target='_blank'>Visit course website</a>"); document.write("</div>"); }</script>\[/code\]