JavaScript - Reposition a DIV incrementally onClick <p>Very simple code, very simple problem. When a link is pressed, it moves a div either up or down. However, I cannot get it to move incrementally. I know this is a simple syntax error, but google isn't revealing the error of my ways. Anyone willing to enlighten me?</p> <p><code>&lt;a class="galsel" onclick="document.getElementById('innerscroll').style.bottom -='167px';"&gt;&amp;laquo;&lt;/a&gt;</code></p> <p><code>&lt;a class="galsel" onclick="document.getElementById('innerscroll').style.bottom +='167px';"&gt;&amp;raquo;&lt;/a&gt;</code></p> <p>I already have it so that the div tiles itself vertically, so I'm not worried about it going "too high" or "too low"</p> <p>Here's what it looks like right now: drainteractive.com/FBD/projects.php</p>