allowed height attribute for marquees

thx to @ArachnoLibrarian for the code

list of allowed attributes now

direction: Sets the direction of the scrolling within the marquee. Possible values are left, right, up and down. If no value is specified, the default value is left.

behavior: Sets how the text is scrolled within the marquee. Possible values are scroll, slide and alternate. If no value is specified, the default value is scroll.

scrollamount: Sets the amount of scrolling at each interval in pixels. The default value is 6.

height: Sets the height in pixels (only whitelisted up to 500)

example:

<marquee behavior="alternate" direction="down" height="500" scrollamount="100"> <marquee behavior="alternate" scrollamount="100"> </marquee> </marquee>

translates to: