function fnMenuBackground(t, td, iimg){
    
    var imgR;
    var imgL;
    
    imgR = MM_findObj("imgR" + iimg.toString());
    imgL = MM_findObj("imgL" + iimg.toString());
    
    switch(t){
        case 1:{
            td.style.backgroundImage = "url('images/b_mnu_mouse.gif')";
            if(imgR!=null) imgR.src="images/b_right_mnu_mouse.gif";
            if(imgL!=null) imgL.src="images/b_left_mnu_mouse.gif";
            td.attributes["class"].value = "menu_over";
            break;
            }
        case 2:{ 
            td.style.backgroundImage = "url('images/b_mnu_selected.gif')";
            if(imgR!=null) imgR.src="images/b_right_mnu_selected.gif";
            if(imgL!=null) imgL.src="images/b_left_mnu_selected.gif";
            td.attributes["class"].value = "menu_active";
            break;
            }
        default:{
            td.style.backgroundImage = "url('images/b_mnu_normal.gif')";
            if(imgR!=null) imgR.src="images/b_right_mnu_normal.gif";
            if(imgL!=null) imgL.src="images/b_left_mnu_normal.gif";
            td.attributes["class"].value = "menu";
            break;
            }
    } 
}//end of fnMenuBackground

function MM_findObj(n, d) { //v4.0
		var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
		if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
		for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
		if(!x && document.getElementById) x=document.getElementById(n); return x;
}//end of MM_findObj