JS picture up and down uninterrupted scrolling code

<div Id=link_logo style= "Overflow:hidden; width:282px; height:518px ""
<div id=link_logo1 style= "Overflow:hidden"
<table width= "282"   border= "0" cellpadding= "cellspacing=" "0" "
<tr><td><img src=" Http://www.jzread.com/skin/default/imga /logo.gif "border=" 0 "width=" 282 "height=" "/></TD></TR>
<tr><td><img src=" http ://www.jzread.com/skin/default/imga/logo.gif "border=" 0 "width=" 282 "height=" "/></TD></TR>
<tr><td><img src= "http://www.jzread.com/skin/default/imga/logo.gif" border= "0" width= "282" "/></td></tr>
<tr><td><img src=" http://www.jzread.com/skin/default/imga/ Logo.gif "border=" 0 "width=" 282 "height=" "/></TD></TR>
<tr><td><img src=" http:/" /www.jzread.com/skin/default/imga/logo.gif "border=" 0 "width=" 282 "height="/></TD></TR>
< Tr><td><img sRc= "Http://www.jzread.com/skin/default/imga/logo.gif" border= "0" width= "282" height= "the" "/></td></tr"
<tr><td><img src= "http://www.jzread.com/skin/default/imga/logo.gif" border= "0" width= "282" height= "/></td></tr>"
</table> 
</div>
<div id=link_logo2>< /div>
</div>

<script>
var speed=65
link_logo2.innerhtml=link_logo1.innerhtml
Function Marquee2 () {
if ( link_logo2.offsettop-link_logo.scrolltop<=0)
Link_logo.scrolltop-=link_logo1.offsetheight
else{
link_logo.scrolltop++
}
}
var mymar2=setinterval (marquee2,speed)
Link_logo.onmouseover=function () { Clearinterval (MYMAR2)}
Link_logo.onmouseout=function () {Mymar2=setinterval (marquee2,speed)}
</script