function validate_required(field,alerttxt)
{with(field)
{if(value==null||value=="")
{alert(alerttxt);return false;}
else{return true}}}
function validate_form(thisform)
{with(thisform)
{if(validate_required(email,"Email must be filled out!")==false)
{email.focus();return false;}}}
function openWindow(url)
{var newWindow=window.open(url,'_blank')
newWindow.focus();}