I am the chief software engineer at Epicenter Consulting, a boutique software
company in New York City that specializes in developing high-end, customized business
solutions using ColdFusion and jQuery.
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The Compatibility information listed at http://www.quirksmode.org/dom/w3c_cssom.html infact shows clientX,clientY to be the one consistent on most browsers. So it should be safe using clientX,clientY right ?... read more »