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_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_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];
		}
}

window.onload =MM_preloadImages('../img/btn_1_sel.gif','../img/btn_2_sel.gif','../img/btn_3_sel.gif','../img/btn_4_sel.gif','../img/btn_5_sel.gif','../img/btn_6_sel.gif','../img/btn_7_sel.gif');