function signupValidation() {

	if(document.signup.first_name.value != ""  && document.signup.last_name.value != ""  && echeck(document.signup.email.value)==true && isNumeric(document.signup.phone_1.value)==true  && isNumeric(document.signup.phone_2.value)==true  && isNumeric(document.signup.phone_3.value)==true  && document.signup.zip.value != ""){
		
			
		document.signup.submit();
	}else{
		alert("You must fill out all fields to qualify for your free consultation.");

	}

}


function isNumeric(elem){
	var numericExpression = /^[0-9]+$/;
	if(elem.match(numericExpression)){
		return true;
	}else{
		alert("Your phone number must be entered using numbers 0-9");
		return false;
	}
}


function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		   alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		   alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		   alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		   alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		   alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
	}