window.addEvent('domready', function() {
	setBannerPos();	
});
window.addEvent('resize', function() {
	setBannerPos();	
});

function setBannerPos(){
	
	var offset = 800 + 20;
	
	checkVersion();
	
	function getInternetExplorerVersion()
	{
        var rv = -1; // Return value assumes failure.
        if (navigator.appName == 'Microsoft Internet Explorer') {
            var ua = navigator.userAgent;
            var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
            if (re.exec(ua) != null) 
                rv = parseFloat(RegExp.$1);
        }
        return rv;
    }
	
    function checkVersion()
	{
        var ver = getInternetExplorerVersion();
        if (ver > -1) {
            if (ver >= 8.0) 
                offset = 800 + 20;
            else 
                offset = 510;
        }
		//use default offset
    }
	
	
	
	bannerPos = $E('.centerthis').getCoordinates().left + offset;
	$('skyBanner').setStyle('margin-left', bannerPos + 'px');
}