1.
Replace mootools-1.2-more and mootools-1.2-core with those that are included in the original library (must contain sortables and Drop)

2.
Layout.css search for
#desktopNavbar li

add in the brackets

float: left;
background-repeat: no-repeat; background-position: left; margin-left:-3px;


3.
in plugins/windowform/css/style.css
modify

#desktop textarea {
}

remove width and height