What is the rule behind to divide this html in var tip?
<p>What is the rule behind to divide this html in var tip?</p>

<pre><code>    var tip = "&lt;p class='adobe-reader-download'&gt;Most computers 
    will open PDF documents automatically, but you may need to download 
    &lt;a title='Link to Adobe website-opens in a new window'";
    tip += " href='http://www.adobe.com/products/acrobat/readstep2.html'
 target='_blank'&gt;Adobe Reader&lt;/a&gt;.
    &lt;/p&gt;";
</code></pre>

<p>why this cannot be</p>

<pre><code>    var tip = "&lt;p class='adobe-reader-download'&gt;Most computers will 
    open PDF documents automatically, but you may need to download 
    &lt;a title='Link to Adobe website-opens in a new window' 
href='http://www.adobe.com/products/acrobat/readstep2.html' target='_blank'&gt;
    Adobe Reader&lt;/a&gt;.&lt;/p&gt;";
</code></pre>

<p>and how to divide in HTML is longer than this?</p>
