// check inventory 
window.onload = checkInv;
var inv;
inv = inv * 1;
function checkInv() {
	if(inv < 1 && document.getElementById('addtocart') && document.getElementById('invEmail')){
		document.getElementById('addtocart').style.display='none';
document.getElementById('instockgif').style.display='none';
document.getElementById('invEmail').style.display='block';
document.getElementById('outstockgif').style.display='inline';
	}
}
function invThankYou(){
	if (document.getElementById('invThankyou')){
		document.getElementById('invThankyou').style.display='block';
	}
	if (document.getElementById('invEmail')){
		document.getElementById('invEmail').style.display='none';
	}
}

// check out of stock form
function check_form(){
	if(document.invEmail.name.value == ""){
		alert("Insert your name");
		document.invEmail.name.focus();
		return false;
	}
	if(document.invEmail.email.value == ""){
		alert("Insert your email");
		document.invEmail.email.focus();
		return false;
	}
	var str = document.invEmail.email.value;
	var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;
	if (!str.match(re)) {
		alert("Incorect email adress!");
		document.invEmail.email.focus();
		return false;
	}
	if(document.invEmail.sku.value == ""){
		alert("Insert SKU");
		document.invEmail.sku.focus();
		return false;
	}
	return true;
}