function resizeIFrame(frame) 
{                
    if ( frame.readyState ) {
        while(frame.readyState != "complete"){};
    }
    var the_height = frame.contentWindow.document.body.scrollHeight;             
    if ( the_height<600 ) the_height=600; else the_height += 25;
    
    frame.height = the_height;
}

function check_mail()
{
	if (document.getElementById("nachname").value=="" || document.getElementById("email").value=="" || document.getElementById("telefon").value=="") {
		window.alert ("Bitte geben Sie eine gültige W-Mail-Adresse ein!");
	}
	else
	{
	//	document.getElementById("mail_form").submit();
	}
}

function new_window(url){
    window.open(url,'','menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=yes,fullscreen=no,width=212,height=146'); 
}

function show_image(image)
{
	document.getElementById ('large_car_image').src = '../database/images/' + image;
}