Dreamweaver mouseover not working correctly in IE7

Hi,

I have some mouseovers that are working correctly in Firefox and Safari, but not in IE7.

For example, holding the mouse over the "2" (2-l.gif) graphic (CODE BELOW - generated via DreamWeaver):

Firefox/Safari: shows 2-d.gif in place of 2-l.gif graphic, all others stay the same (correct)
IE 7: 2-l.gif stays the same, but the 4 graphic switches to 2-d.gif.

This seems to be related to positioning somehow? I'm new to this, so probably doing something silly...

Any advice is greatly appreciated!

Thanks--
gg

Scripts:

function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i}

function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


In table: