function enviar(comp, form){
	var error=false;
		
	for(var i=0; i<=comp.length-1; i++){
		if(document.getElementById(comp[i]).value.length<1){
			document.getElementById(comp[i]).style.background="#FF6600";
			error=true;
		}
	}
	if(error) {
		alert("Els camps marcats * són obligatoris");
	}else{
		document.getElementById(form).submit();
	}
}