function trim(s){return s.replace(/^\s+|\s+$/g,'')}

    function formValidation(o) {
        var valid=true;
        
        var errors = [];
        
        for ( var i=0, l=o.length - 2; i<l; ++i ) {
            var locValid = true;
            o[i].value = trim(o[i].value);
            o[i].style.backgroundColor = '';
            if ( o[i].value.length == 0 ) locValid=false; 
            if ( o[i].value.length > o[i].maxlength ) locValid=false;
            
            if ( ! locValid ) {
                valid = false;
                o[i].style.backgroundColor = '#fee';
            }
        }
        
        if( ! valid ) {
            errors.push( "Fields required".localize() ); 
        }
        
        if ( o[2].value != o[3].value ) { 
            valid=false;
            errors.push( "Mismatch with mail confirmation".localize() );
            o[3].style.backgroundColor = '#fee';
        }
                
        if ( valid ) {
            var args = [];
            for ( var i=0, l=o.length; i<l; ++i ) {
                args.push( o[i].name + '=' + escape(o[i].value) );
            }
            require('form', o.action, args);
        } else {
            var errorDiv = document.getElementById('errorForm');
            errorDiv.innerHTML = errors.join('<br />');
        }
        
        return false;
    }
    
    function updateCounting(o) {
        var counting = document.getElementById('customerCounting');
        counting.innerHTML = "%0 caracter(s) from 300".localize().replace('%0', o.value.length);
    }