function isEmail(str) {
   var supported = 0;
   if (window.RegExp) {
   var tempStr = "a";
   var tempReg = new RegExp(tempStr);
   if (tempReg.test(tempStr)) supported = 1;
   }
   if (!supported)
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
   var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
   var r2 = new
   RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
   return (!r1.test(str) && r2.test(str));
}

function isFill(obj)
{
    var res=true;
    if (res && (obj.name.value.length<3))
    {
        res=false;
        alert("Please enter a Name");
    }
    if ((res && !isEmail(obj.email.value) && (obj.phone.value.length<3)))
    {
        res=false;
        alert("Please enter a valid Email address or Phone!");
    }

   if (res) obj.submit();
   return res;
}