var msgok = "<img src='/img/button_ok.png' width='20' height='20' alt='Ok'>";
var msgko= "<img src='/img/button_cancel.png' width='20' height='20' alt='Erreur'>";
var colorko= "#FFFF80";
pic1= new Image(20,20); 
pic1.src="/img/button_ok.png"; 
pic2= new Image(20,20); 
pic2.src="/img/button_cancel.png"; 

function checkEmail(inputvalue){	
    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
    if(pattern.test(inputvalue)){         
		return true;  
    }else{   
		return false; 
    }
}