if(navigator.appVersion.indexOf("Mac") != -1)
{
    if(navigator.userAgent.indexOf("Safari") != -1)
    {
        document.write("<link href=\"_css/SiteStyles_mac_safari.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
    else if(navigator.userAgent.indexOf("Firefox") != -1)
    {
        document.write("<link href=\"_css/StyleSheet_ff.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
    else
    {
        document.write("<link href=\"_css/SiteStyles_mac_safari.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
}
else if(navigator.userAgent.indexOf("MSIE") != -1)
{
	if(parseFloat(navigator.appVersion.split("MSIE")[1]) == 6)
	{
		document.write("<link href=\"_css/SiteStyles_ie6.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
    else if(parseFloat(navigator.appVersion.split("MSIE")[1]) == 7)
	{
		document.write("<link href=\"_css/SiteStyles_ie7.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
    else
    {
		document.write("<link href=\"_css/SiteStyles_ie8.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
    }
}
else if(navigator.userAgent.indexOf("Firefox") != -1)
{
    document.write("<link href=\"_css/StyleSheet_ff.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
}
else if(navigator.userAgent.indexOf("Safari") != -1)
{
    document.write("<link href=\"_css/SiteStyles_mac_safari.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
}
/*    alert(navigator.userAgent.indexOf("Safari"));
else if(navigator.userAgent.indexOf("Opera") != -1)
{
    document.write("<link href=\"_css/SiteStyles_opera.css\" rel=\"stylesheet\" type=\"text/css\"></link>");
}
*/