function drop(show,hide)
{
 document.getElementById(show).style.visibility='visible';
 for (i=0; i<hide.length; i++)
 { 
  document.getElementById(hide[i]).style.visibility='hidden';
 }
}
<!--
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];}
}
//-->
function DJwindow(url) {
window.open(url);
}

function infoPage(num) {
if(num==1)
var selID=document.CustomDrum.Stock1.value;
else if(num==2)
var selID=document.CustomDrum.Stock2.value;
else if(num==3)
var selID=document.CustomDrum.Stock3.value;
else if(num==4)
var selID=document.CustomDrum.Stock4.value;
else if(num==5)
var selID=document.CustomDrum.Stock5.value;
else 
var selID=document.CustomDrum.Stock11.value;
if(selID!=0)
window.open("http://drumdaddydrums.com/Stock/Sto"+selID+".html");
}
function priceBox(){
	var pID=document.CustomDrum.Stock1.options[document.CustomDrum.Stock1.selectedIndex].id;
	var compPrice1=priceArray[pID];
	if(document.CustomDrum.Stock1.value=='none')
	{document.CustomDrum.img1.src="http://drumdaddydrums.com/images/Stock/no-images.gif";}
	else
	{document.CustomDrum.img1.src="http://drumdaddydrums.com/images/Stock/" + document.CustomDrum.Stock1.value + "s.jpg";}
	 pID=document.CustomDrum.Stock2.options[document.CustomDrum.Stock2.selectedIndex].id;
	var compPrice2=priceArray[pID];
	if(document.CustomDrum.Stock2.value=='none')
	{document.CustomDrum.img2.src="http://drumdaddydrums.com/images/Stock/no-images.gif";}
	else
	{document.CustomDrum.img2.src="http://drumdaddydrums.com/images/Stock/" + document.CustomDrum.Stock2.value + "s.jpg";}
	 pID=document.CustomDrum.Stock3.options[document.CustomDrum.Stock3.selectedIndex].id;
	var compPrice3=priceArray[pID];
if(document.CustomDrum.Stock3.value=='none')
	{document.CustomDrum.img3.src="http://drumdaddydrums.com/images/Stock/no-images.gif";}
	else
	{document.CustomDrum.img3.src="http://drumdaddydrums.com/images/Stock/" + document.CustomDrum.Stock3.value + "s.jpg";}
	 pID=document.CustomDrum.Stock4.options[document.CustomDrum.Stock4.selectedIndex].id;
	var compPrice4=priceArray[pID];
if(document.CustomDrum.Stock4.value=='none')
	{document.CustomDrum.img4.src="http://drumdaddydrums.com/images/Stock/no-images.gif";}
	else
	{document.CustomDrum.img4.src="http://drumdaddydrums.com/images/Stock/" + document.CustomDrum.Stock4.value + "s.jpg";}
	 pID=document.CustomDrum.Stock5.options[document.CustomDrum.Stock5.selectedIndex].id;
	var compPrice5=priceArray[pID];
if(document.CustomDrum.Stock5.value=='none')
	{document.CustomDrum.img5.src="http://drumdaddydrums.com/images/Stock/no-images.gif";}
	else
	{document.CustomDrum.img5.src="http://drumdaddydrums.com/images/Stock/" + document.CustomDrum.Stock5.value + "s.jpg";}
}
function color()
{
 if(document.CustomDrum.Color1.value=='none')
	{document.CustomDrum.col1.src="http://drumdaddydrums.com/images/color/no-images.gif";}
	else
	{document.CustomDrum.col1.src="http://drumdaddydrums.com/images/color/" + document.CustomDrum.Color1.value + ".jpg";}
}