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 ID")
	   return false
	}

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

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

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

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

	 return true					

}


function	validation(form) {
	
	if (form.your_name.value.length <= 0) {
		
		alert ('Please insert a Name, it is a required field.');
		
		return false;
		
	}


	if (form.company.value.length <= 0) {

		alert ('Please insert a Company, it is a required field.');
		
		return false;
		
	}


	if (form.telephone.value.length <= 0) {
		
		alert ('Please insert a Telephone, it is a required field.');
		
		return false;
		
	}


	if (form.email.value.length <= 0) {
		
		alert ('Please insert a Email, it is a required field.');
		
		return false;
		
	}


	if (form.email.value.length > 0){

		if (echeck(form.email.value) == false){
		
			return false;

		}

	}


	if (form.contact_me_via.value == -1) {
		
		alert ('Please select a Contact me via, it is a required field.');
		
		return false;
		
	}

	
	if (form.how_did_you_heard_about_us.value == -1) {
		
		alert ('Please select a How did you heard about us, it is a required field.');
		
		return false;
		
	}



	return true;
	
}