function HideandUNhideObj(i){
        nav=document.getElementById('div'+i).style;
        if(nav.display=="none"){
                nav.display = 'block';
        } else {
                nav.display='none';
        }
}
function toggle(object,id){
	var elem = document.getElementById(id);
	if (elem.className == 'show'){
		object.style.backgroundImage = 'url(/images/bg_languages.gif)';
		elem.className = '';
	} else {
		object.style.backgroundImage = 'url(/images/bg_languages-active.gif)';	
		elem.className = 'show';
	}
}
function checksearch(elem){
	elem = elem.keywords;
	if (elem.value == "" || elem.value == systemtext["search-default"]){
		alert(systemtext["search-empty"]);
		elem.focus();
		return false;
	}
	return true;
}
function erase_search(object){
	if (object.value != ''){
		object.value = '';
	}
}
function default_search(object){
	if (object.value == ''){
		object.value = systemtext["search-default"];
	}
}
function erase_mail(object){
	if (object.value != ''){
		object.value = '';
	}
}
function default_mail(object){
	if (object.value == ''){
		object.value = 'add your address';
	}
}
function checkenews(elem){
	elem = elem.email;
	if (elem.value == "" || elem.value == systemtext["enews-default"]){
		alert(systemtext["enews-empty"]);
		elem.focus();
		return false;
	}
	else{
		var email=/^[_\.0-9a-z-]+\@([0-9a-z][0-9a-z-]*\.)+([a-z]{2,4})+$/i
		if(!email.test(elem.value)){
			elem.style.background="#FCC9C9";
			alert(systemtext["invalid-email"]);
			return false;
		} 
	}
	return true;
}

function check(which, verplicht, error, emailerror){
	var empty = false;
	for (i=0;i<which.length;i++){
		var veld=which.elements[i];
		if(veld.type=="text"){
			//Maak alle achtergronden (weer) wit
			veld.style.background="#FFFFFF";
		}
		for (j=0;j<verplicht.length;j++){
			if(veld.type=="text" && veld.name==verplicht[j][0] && veld.value==''){
				veld.style.background="#FFBB99";
				empty = true;
			}
			if(veld.type=="textarea" && veld.name==verplicht[j][0] && veld.value==''){
				veld.style.background="#FFBB99";
				empty = true;
			}
			if(veld.type=="text" && veld.value!='' && veld.name=='email' && verplicht[j][1]=='email'){
				// E-mail check!
				var email=/^[_\.0-9a-z-]+\@([0-9a-z][0-9a-z-]*\.)+([a-z]{2,4})+$/i
				if(!(email.test(veld.value))){
					veld.style.background="#FF818C";
					alert(emailerror);
					return false;
				}
			}
		}
	}
	if(empty){
		alert(error);
		return false;
	} else {
		return true;
	}
}