mouse_over_001 = new Image;
mouse_over_001.src = "images/banner005.jpg";
mouse_over_002 = new Image;
mouse_over_002.src = "images/banner006.jpg";
mouse_over_003 = new Image;
mouse_over_003.src = "images/banner007.jpg";
mouse_over_004 = new Image;
mouse_over_004.src = "images/banner008.jpg";

function over(product)
{
	if(product == '001')
		{document.banner.src = mouse_over_001.src;}
	if(product == '002')
		{document.banner.src = mouse_over_002.src;}
	if(product == '003')
		{document.banner.src = mouse_over_003.src;}
	if(product == '004')
		{document.banner.src = mouse_over_004.src;}
}
function out()
{
	document.banner.src="images/banner.gif"
}

function CHKContact(f)
{
	if(f.name.value=="")
	{
		alert("Please enter your name.");
		f.name.focus();
		return false;
	}
	if(f.email.value=="" || f.email.value.search("@")==-1 || f.email.value.search("[*.]")==-1)
	{
		alert("Please enter your valid email address.");
		f.email.focus();
		return false;
	}
	if(f.msg.value=="")
	{
		alert("Please enter your message before you send.");
		f.msg.focus();
		return false;
	}
return true;
}

function CHKLogin(f)
{
	if(f.loginID.value=="")
	{
		alert("Please enter user ID.");
		f.loginID.focus();
		return false;
	}
	if(f.pwd.value=="")
	{
		alert("Please enter password.");
		f.pwd.focus();
		return false;
	}
return true;
}

function CHKAddnews(f)
{
	if(f.headline.value=="")
	{
		alert("Please enter headline.");
		f.headline.focus();
		return false;
	}
	if(f.story.value=="")
	{
		alert("Please enter story text.");
		f.story.focus();
		return false;
	}
return true;
}

function CHKEditAccount(f)
{
	if(f.loginID.value=="")
	{
		alert("Cannot leave login ID into blank.");
		f.loginID.focus();
		return false;
	}
	if(f.pwd.value=="")
	{
		alert("Cannot leave password into blank.");
		f.pwd.focus();
		return false;
	}
return true;
}
function CHKAddproduct(f)
{
	if(f.CatID.value=="")
	{
		alert("Please select category.");
		f.CatID.focus();
		return false;
	}
	if(f.product_name.value=="")
	{
		alert("Please enter product name.");
		f.product_name.focus();
		return false;
	}
	if(f.product_desc.value=="")
	{
		alert("Please enter product description.");
		f.product_desc.focus();
		return false;
	}
	if(f.product_spec.value=="")
	{
		alert("Please enter product specification.");
		f.product_spec.focus();
		return false;
	}
return true;
}

function CHKAddcategory(f)
{
	if(f.category.value=="")
	{
		alert("Please enter category name.");
		f.category.focus();
		return false;
	}
	if(f.pos.value=="")
	{
		alert("Please enter position of category.");
		f.pos.focus();
		return false;
	}
return true;
}

function confirmDEL()
{
	var ok=confirm("Are you sure you want to delete the item?\nThe item cannot be restore once you delete.");
	if (ok){return true;}
	else return false;
}

function confirmLogout()
{
	var ok=confirm("Are you sure you want to logout?");
	if (ok){return true;}
	else return false;
}

function momo()
{
	if(event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;
}