if (document.images) {
    sd11on = new Image(); sd11on.src="images/e_sd_bt11_.jpg";
    sd12on = new Image(); sd12on.src="images/e_sd_bt12_.jpg";
    sd13on = new Image(); sd13on.src="images/e_sd_bt13_.jpg";
    sd14on = new Image(); sd14on.src="images/e_sd_bt14_.jpg";
    sd15on = new Image(); sd15on.src="images/e_sd_bt15_.jpg";
    sd16on = new Image(); sd16on.src="images/e_sd_bt16_.jpg";
    sd21on = new Image(); sd21on.src="images/e_sd_bt21_.jpg";
    sd22on = new Image(); sd22on.src="images/e_sd_bt22_.jpg";
    sd23on = new Image(); sd23on.src="images/e_sd_bt23_.jpg";	
	sd24on = new Image(); sd24on.src="images/e_sd_bt24_.jpg";
	sd25on = new Image(); sd25on.src="images/e_sd_bt25_.jpg";
    sd26on = new Image(); sd26on.src="images/e_sd_bt26_.jpg";	
    sd31on = new Image(); sd31on.src="images/e_sd_bt31_.jpg";
    sd32on = new Image(); sd32on.src="images/e_sd_bt32_.jpg";
    sd33on = new Image(); sd33on.src="images/e_sd_bt33_.jpg";
    sd34on = new Image(); sd34on.src="images/e_sd_bt34_.jpg";
    sd35on = new Image(); sd35on.src="images/e_sd_bt35_.jpg";
    sd36on = new Image(); sd36on.src="images/e_sd_bt36_.jpg";
    sd37on = new Image(); sd37on.src="images/e_sd_bt37_.jpg";
    sd38on = new Image(); sd38on.src="images/e_sd_bt38_.jpg";
    sd39on = new Image(); sd39on.src="images/e_sd_bt39_.jpg";
    sd40on = new Image(); sd40on.src="images/e_sd_bt40_.jpg";
    sd50on = new Image(); sd50on.src="images/e_sd_bt50_.jpg";

   
    sd11off = new Image(); sd11off.src="images/e_sd_bt11.jpg";
    sd12off = new Image(); sd12off.src="images/e_sd_bt12.jpg";
    sd13off = new Image(); sd13off.src="images/e_sd_bt13.jpg";
    sd14off = new Image(); sd14off.src="images/e_sd_bt14.jpg";
    sd15off = new Image(); sd15off.src="images/e_sd_bt15.jpg";
    sd16off = new Image(); sd16off.src="images/e_sd_bt16.jpg";
    sd21off = new Image(); sd21off.src="images/e_sd_bt21.jpg";
    sd22off = new Image(); sd22off.src="images/e_sd_bt22.jpg";
    sd23off = new Image(); sd23off.src="images/e_sd_bt23.jpg";
	sd24off = new Image(); sd24off.src="images/e_sd_bt24.jpg";
	sd25off = new Image(); sd25off.src="images/e_sd_bt25.jpg";
	sd26off = new Image(); sd26off.src="images/e_sd_bt26.jpg";
    sd31off = new Image(); sd31off.src="images/e_sd_bt31.jpg";
    sd32off = new Image(); sd32off.src="images/e_sd_bt32.jpg";
    sd33off = new Image(); sd33off.src="images/e_sd_bt33.jpg";
    sd34off = new Image(); sd34off.src="images/e_sd_bt34.jpg";
    sd35off = new Image(); sd35off.src="images/e_sd_bt35.jpg";
    sd36off = new Image(); sd36off.src="images/e_sd_bt36.jpg";
    sd37off = new Image(); sd37off.src="images/e_sd_bt37.jpg";
    sd38off = new Image(); sd38off.src="images/e_sd_bt38.jpg";
    sd39off = new Image(); sd39off.src="images/e_sd_bt39.jpg";
    sd40off = new Image(); sd40off.src="images/e_sd_bt40.jpg";
    sd50off = new Image(); sd50off.src="images/e_sd_bt50.jpg";
}
function imgOn(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "on.src");
    }
}
function imgOff(imgName) {
    if (document.images) {
        document[imgName].src = eval(imgName + "off.src");
    }
}

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];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}