function CheckFields(){
var ergx = new RegExp('\\w+([-+.\']\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*'); 
if(document.getElementById("MailName").value == "" || document.getElementById("MailPhone").value == "" || document.getElementById("MailEmail").value == "" || document.getElementById("MailSubject").value == "" || document.getElementById("MailMessage").value == "")
{alert("Please complete entries.");return false;} 
if(!ergx.test(document.getElementById("MailEmail").value))
{alert("Invalid Email.");return false;}
}
//