function FindImage(name)
{  var theImage=false;
   if(document.images)
   {  theImage=document.images[name]; }
   if(theImage) { return theImage; }
   return (false);
}
function chgbut(id,newsrc)
{  var theImage=FindImage(id);
   if(theImage) { theImage.src=newsrc; }
}
function chgprodpic(id,newsrc)
{  var theImage=FindImage(id);
   if(theImage) { theImage.src=newsrc; }
}
function closewin(winName,newURL)
{	win=window.close("",winName);
}

function NumbOnly(e)
{
var keynum;
var keychar;
var numcheck;
if(window.event) // IE
  {
  keynum = e.keyCode;
  }
else if(e.which) // Netscape/Firefox/Opera
  {
  keynum = e.which;
  }
keychar = String.fromCharCode(keynum);
numcheck = /\d/;
return numcheck.test(keychar);
}
function setInput(x)
{
document.getElementById(x).select();
}
function clrInput(x)
{
document.getElementById(x).style.background="white";
}
function AddCart()
{	document.buyform.submit();
}
function showvpic(img,legend)
{	var dv=false, thepic=false;
// hide other div
	dv=document.getElementById('hpic');
	if(dv) { dv.style.visibility='hidden'; }
// set new picture	
	thepic=document.getElementById('vertpic');
	if(thepic) {thepic.src=img; }
// show div	
	dv=document.getElementById('vpic');
	if(dv) { dv.style.visibility='visible'; }
	dv=document.getElementById('hleg');
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById('vleg');
	if(dv) {dv.innerHTML=legend; dv.style.visibility='visible';}
}
function showhpic(img,legend)
{	var dv=false, thepic=false;
	dv=document.getElementById('vpic');
	if(dv) { dv.style.visibility='hidden'; }
	thepic=document.getElementById('horzpic');
	if(thepic) { thepic.src=img; }
	dv=document.getElementById('hpic');
	if(dv) { dv.style.visibility='visible'; }
	dv=document.getElementById('vleg');
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById('hleg');
	if(dv) { dv.innerHTML=legend; dv.style.visibility='visible'; }
}
function showchg(show)
{	var dv=false,img=false;
	var iname, dname, isrc, sts;
	var i;
	for(i=1;i<5;i++)
	{	dname='text'+i;
		iname='pbut'+i;
		if(i==show)
		{	isrc='images/pshw'+i+'.gif';
			sts='visible';
		}
		else
		{	isrc='images/pbut'+i+'.gif';
			sts='hidden';
		}
		dv=document.getElementById(dname);
		if(dv) {dv.style.visibility=sts; }
		img=document.getElementById(iname);
		if(img) { img.src=isrc; }
	}
}	
function showhide(show,hide1,hide2,hide3,hide4,hide5)
{	var dv=false;
	dv=document.getElementById(hide1)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(hide1)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(hide2)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(hide3)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(hide4)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(hide5)
	if(dv) {dv.style.visibility='hidden';}
	dv=document.getElementById(show)
	if(dv) {dv.style.visibility='visible';}
}