var slideimages = new Array();
var slidelinks = new Array();

function slideshowimages() {
for (i=0; i < slideshowimages.arguments.length; i++) {
slideimages[i] = new Image();
slideimages[i].src = slideshowimages.arguments[i];
}
}

function slideshowlinks() {
for (i=0; i < slideshowlinks.arguments.length; i++)
slidelinks[i]=slideshowlinks.arguments[i];
}

function gotoshow() {
if (!window.winslide || winslide.closed) {
winslide = document.location(slidelinks[whichlink]);
} else {
winslide.location = slidelinks[whichlink];
winslide.focus();
}
}

function trim(st)
{
	var len = st.length;
	var begin = 0, end = len - 1;
	while (st.charAt(begin) == " " && begin < len)
	{
		begin++;
	}
	while (st.charAt(end) == " " && begin < end)
	{
		end--;
	}
	return st.substring(begin, end+1);
}

function validate_email(em)
{
	em = trim(em);

	if(em.indexOf("@") == -1 || em.indexOf(".") == -1)
	{
		return false;
	}
	else
	{
		return true;
	}
}

function submit_form()
{
    if (document.forms['entry_form'].elements['subscribe'][1].checked)
    {
        document.forms['entry_form'].action = "list_entry.asp";
        document.forms['entry_form'].submit();
    }
    else
    {
        document.forms['entry_form'].action = "list_subscribe.asp";
        document.forms['entry_form'].submit();
    }
}

function check_form()
{
    if (trim(document.forms['entry_form'].elements['name_first'].value) == '')
        {
            alert('Please enter a value for: First Name');
            document.forms['entry_form'].elements['name_first'].focus();
            return false;
        }

    if (trim(document.forms['entry_form'].elements['name_last'].value) == '')
        {
            alert('Please enter a value for: Last Name');
            document.forms['entry_form'].elements['name_last'].focus();
            return false;
        }

    if( !validate_email(document.forms['entry_form'].elements['useremail'].value) )
        {
		    alert('Please enter a value for: E-mail');
            document.forms['entry_form'].elements['useremail'].focus();
            return false;
	    }

    return true;
}