function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

if (document.images) {          
		    img1on = new Image();      
            img1on.src = "images/menu_dr_on.gif"; 
            img2on = new Image(); 
            img2on.src = "images/menu_mini_on.gif";  
            img3on = new Image();
            img3on.src = "images/menu_bc_on.gif";
            img4on = new Image();
            img4on.src = "images/menu_ps_on.gif";
         	img5on = new Image();
            img5on.src = "images/menu_mbga2_on.gif";
						
            img1off = new Image(); 
            img1off.src = "images/menu_dr_off.gif"; 
            img2off = new Image();          
            img2off.src = "images/menu_mini_off.gif"; 
            img3off = new Image();
            img3off.src = "images/menu_bc_off.gif";
            img4off = new Image();
            img4off.src = "images/menu_ps_off.gif";
			img5off = new Image();
            img5off.src = "images/menu_mbga2_off.gif";
	    }
		
		// Function to 'activate' images.
         
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}
         
// Function to 'deactivate' images.
         
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}
         
	
	var agt = navigator.userAgent.toLowerCase();
	var is_ie4  = agt.indexOf("msie 4.0")!=-1;
	var is_ie5up  = agt.indexOf("msie 5.0")!=-1;
	var style = "pc";
	
	if (navigator.platform != "Win32")
	{	style = "mac_ns4";
		if (is_ie5up)
			style="mac_ie";
			if (is_ie4)
			style="mac_ie4";
	}
	else
	{	if (navigator.appName == "Netscape")
		{	if(parseInt(navigator.appVersion) >= 5)
			style+="ns6";
			else
			style+="ns4";
		}
	}
	document.write("<link rel='stylesheet' type='text/css' href='includes/css/site_"+style+".css'>");