Topic: Can not get it to work

[BlueM]

Hello....I am using Joomla and I have uploaded ans installed webim ok but...when i click to "leave message" the pop up is blank
This is the button Code

<!-- webim button --><a href="/webim/client.php?locale=en" target="_blank" onclick="if(navigator.userAgent.toLowerCase().indexOf('opera') != -1 &amp;&amp; window.event.preventDefault) window.event.preventDefault();this.newWindow = window.open('/webim/client.php?locale=en&amp;url='+escape(document.location.href)+'&amp;referrer='+escape(document.referrer), 'webim', 'toolbar=0,scrollbars=0,location=0,status=1,menubar=0,width=640,height=480,resizable=1');this.newWindow.focus();this.newWindow.opener=window;return false;"><img src="/webim/button.php?i=mblue&amp;lang=en" border="0" width="177" height="61" alt=""/></a><!-- / webim button -->

AND with help I took out line AND WORKS GREAT

&amp;url='+escape(document.location.href)+'

JUST want to say that that line MUST be there for a reason and I do not know what it does...