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(cEmail,"Please enter an e-mail address.")==false){cEmail.focus();return false;}
if(validate_email(cEmail,"Please enter a valid e-mail address.")==false){cEmail.focus();return false;}
if(validate_required(cSbj,"Please enter a subject for your message.")==false){cSbj.focus();return false;}
if(validate_required(cMsg,"Please enter a message.")==false){cMsg.focus();return false;}}}
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;}}}