if (document.getElementById && document.createTextNode){canDOM=true}
if (canDOM){
document.write('<style type="text/css">.domhidden{display:none;}</style>')
}
function show_form(id){
Forms=new Array('form01', 'form02', 'form03', 'form04', 'form05', 'form06', 'form07', 'form08', 'form09', 'form10');
Buttons=new Array('button01', 'button02', 'button03', 'button04', 'button05', 'button06', 'button07', 'button08', 'button09', 'button10');
if (canDOM && document.getElementById(id)){
	elm=document.getElementById(id);
	elm.style.display='block';
	for (i=0; i<10; i++){
	if (Forms[i] != id){
	newid=Forms[i];
	elm=document.getElementById(newid);
	elm.style.display='none';
	show_button(Buttons[i]);
}
}
}
}


function hide_form(id){
if (canDOM && document.getElementById(id)){
	elm=document.getElementById(id);
	elm.style.display='none';
}
}


function show_button(id){
if (canDOM && document.getElementById(id)){
	elm=document.getElementById(id);
	elm.style.display='block';
}
}

function hide_button(id){
if (canDOM && document.getElementById(id)){
	elm=document.getElementById(id);
	elm.style.display='none';
}
}

function calculate_amount(formname, id){
var copies=formname.no_copies.value;
elm=document.getElementById(id);
elm.innerHTML=copies*30;
}


//elm.style.display=='none'||elm.style.display=='')?'block':'none';