/**
 * Class affichant les mots clefs
 **/
var keywordsHidden = new Class({
	initialize: function(elobject){
		this.elements = [];
		this.elements.extend(elobject);
		this.elements.each(function(element, index){
			if ($(element)){
				if ($(element).getProperty('value')==''){
					$(element).setProperty('value', $(element).getProperty('title'));
					$(element).addClass('lightvalue');
				}
				$(element).addEvents({
					'focus': function(e){
						if($(element).getProperty('value') == $(element).getProperty('title')){
							$(element).setProperty('value', '');
							$(element).removeClass('lightvalue');
						}
					},
					'blur': function(e){
						if($(element).getProperty('value') == '') {
							$(element).setProperty('value', $(element).getProperty('title'));
							$(element).addClass('lightvalue');
						}
					}
				});
			}
		});
	}
});