There are tweaks needed to the wordpress installed at this location
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such as but not limited to:
z-index's
positioning
alignments
(i.e. in firefox almost everything is set properly, but in internet explorer and safari, background items with a z-index of -1 are showing on top of items with a z-index: 99 etc)
Also please review other areas of the site that may be an issue in different browsers, there are only 5-10 pages