// JavaScript Document

function checkForm(){
	
		if (document.mailer.name.value=="")	{ 
		alert ("Please enter your name!");
		document.mailer.name.focus();
		return false;
	}
		if (document.mailer.name.value.length <2  )	{
		alert ("Your name should contain more than one letter!");
		document.mailer.name.focus();
		return false;
	}
		if(!isNaN (document.mailer.name.value))	{ 
		alert ("Please enter letter only at your name!");
		document.mailer.name.focus();
		return false;
	}
		if (document.mailer.email.value=="")	{
		alert ("Please enter your e-mail adress!");
		document.mailer.email.focus();
		return false
	}
	    if (!document.mailer.email.value.match(/^[A-Za-z0-9_\.-]{1,}@([A-Za-z0-9_\.-]+){2,}\.([A-Za-z]{2,})$/)){
        alert ("Please enter your correct e-mail adress!");
        document.mailer.email.focus();
        return false;	
	}
		if (document.mailer.empfaengername.value=="")	{ 
		alert ("Please enter the name of the receiver!");
		document.mailer.empfaengername.focus();
		return false;
	}
		if (document.mailer.empfaengername.value.length <2  )	{
		alert ("The name of the receiver should contain more than one letter!");
		document.mailer.empfaengername.focus();
		return false;
	}
		if(!isNaN (document.mailer.empfaengername.value))	{ 
		alert ("Please enter letters only at the name of the receiver!");
		document.mailer.empfaengername.focus();
		return false;
	}
		if (document.mailer.empfaengeremail.value=="")	{
		alert ("Please enter the e-mail adress of the receiver!");
		document.mailer.empfaengeremail.focus();
		return false
	}
	    if (!document.mailer.empfaengeremail.value.match(/^[A-Za-z0-9_\.-]{1,}@([A-Za-z0-9_\.-]+){2,}\.([A-Za-z]{2,})$/)){
        alert ("Please enter the correct e-mail adress of the receiver!");
        document.mailer.empfaengeremail.focus();
        return false;	
	}
	alert('Thank you very much for your request.\Your mail will be delivered now.'); 
	return true;
}