function validate_email(field,alerttxt)
{with(field)
{apos=value.indexOf("@");dotpos=value.lastIndexOf(".");if(apos<1||dotpos-apos<2)
{alert(alerttxt);return false;}
else{return true;}}}
function validate_required(field,alerttxt)
{with(field)
{if(value==null||value==""||value=="your name"||value=="email address")
{alert(alerttxt);return false;}
else
{return true;}}}
function validate_form(thisform)
{with(thisform)
{if(validate_required(name,"Please enter your name!")==false)
{name.focus();return false;}
if(validate_email(email,"Please enter your email!")==false)
{email.focus();return false;}
if(validate_required(message,"Please enter your message!")==false)
{message.focus();return false;}}}