function toggleBox(szDivID, iState) // 1 visible, 0 hidden
{
    if(document.layers)	   //NN4+
    {
       document.layers[szDivID].visibility = iState ? "show" : "hide";
	   document.layers[szDivID].height = iState ? "auto" : "1px";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = iState ? "visible" : "hidden";
		obj.style.height = iState ? "auto" : "1px";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
		document.all[szDivID].style.height = iState ? "auto" : "1px";
    }
}

function getYearDate() {

	var d = new Date();
	document.write(d.getFullYear());
}

function isValidEmail(str) {
   
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
 
}

function verifyMail(language) {
	
	if (language=="nl") {
	
		var themessage = "U moet de volgende verplichte velden invoeren: ";
		if (document.mailSend.name.value=="") {
			themessage = themessage + " - Naam";
		}
		if (document.mailSend.email.value=="") {
			themessage = themessage + " -  E-mail";
		}
		if (document.mailSend.message.value=="") {
			themessage = themessage + " -  Bericht";
		}
		if (document.mailSend.security_code.value=="") {
			themessage = themessage + " -  Beveiligingscode";
		}
		
		//alert if fields are empty and cancel form submit
		if (themessage == "U moet de volgende verplichte velden invoeren: ") {
			document.mailSend.submit();
		}
		else {
			alert(themessage);
			return false;
		}
		
	} else if (language=="en") {
	
		var themessage = "The following fields are required: ";
		if (document.mailSend.name.value=="") {
			themessage = themessage + " - Name";
		}
		if (document.mailSend.email.value=="") {
			themessage = themessage + " -  Email";
		}
		if (document.mailSend.message.value=="") {
			themessage = themessage + " -  Message";
		}
		if (document.mailSend.security_code.value=="") {
			themessage = themessage + " -  Security code";
		}
		
		//alert if fields are empty and cancel form submit
		if (themessage == "The following fields are required: ") {
			document.mailSend.submit();
		}
		else {
			alert(themessage);
			return false;
		}
	
	}
}