// OS Check
function Is ()
{   // convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();
    // *** PLATFORM ***
    this.win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
    this.os2   = ((agt.indexOf("os/2")!=-1) ||
                  (navigator.appVersion.indexOf("OS/2")!=-1) ||
                  (agt.indexOf("ibm-webexplorer")!=-1));
    this.mac    = (agt.indexOf("mac")!=-1);
}
var is;
is = new Is();  

if (is.win == true)
	{
	var ace_path = 'dhtml/';
	var isWindows = "yes";
	}
else
	{
	var isWindows = "no";
	}