function checkemail(email){
	this.email		= email;
	
	this.checkemailplease = checkemailplease;
}

var firstTimer = new checkemail("document.plaster.email");
var twoTimer = new checkemail("document.plaster.r_email");
var threeTimer = new checkemail("document.plaster.s_email");

function checkemailplease(){
	EmailField = eval(this.email);
	var crab = EmailField.value.indexOf("@", 0);
	if (EmailField.value ==""){
		alert("Por favor ingresa tu correo electrónico. (i.e. worker@company.com)")
		EmailField.focus()
		return false;
	}else if (crab == -1){
		alert("Usted debe entrar un dominio. (i.e. worker@COMPANY.com).")
		EmailField.focus()
		EmailField.select()
		return false;
	}else if (EmailField.value.indexOf(".", crab) == -1){
		alert("Usted debe entrar un sufijo del dominio. (i.e. worker@company.COM).")
		EmailField.focus()
		EmailField.select()
		return false;
	}else if (EmailField.value.indexOf(" ", 0) > -1){
		alert("Por favor quite los espacios en la dirección de su correo electrónico")
		EmailField.focus()
		EmailField.select()
		return false;
	}else{
		return true;
	}
}