function contact(target) 
{
	
	var hash = 0;
	
	var name = new Array();
	name.lenght = 3;
	// Name of the field to validate
	name[0] = 'nom'; 
	name[1] = 'courriel';
	name[2] = 'message';
	
	var string = new Array();
	string.lenght = 2;
	// regexp to aply on field
	string['courriel'] = '^([a-zA-Z0-9\-_]){3,}(@){1,}([a-zA-Z0-9\-]){3,}([\.]){1}([^\d\s]){2,4}$';
	string['nom'] = '^([a-zA-Z0-9\-.]){2,}$';
	string['message'] = '.';
	
	if(!target) {
		
		for(i = 0; i <= name.lenght; i++) {
		
			var rp = new RegExp(string[name[i]]);
			var that = document.getElementById(name[i]);
		
			if(that.value != '' && !that.value.match(rp)) {
				alert('Le champ du '+name[i]+' contient des caractere ilégaux ou il est incomplet.');
				return false;
			}
		
			if(that.value == '') { 
				that.style.backgroundColor = '#f4f4f4'
				that.style.border = '1px solid red'
				return false;
			} 
		
		}
		
	} else {
		
		var rp = new RegExp(string[target]);
		var that = document.getElementById(target);
	
		if(that.value.match(rp)) {
			that.style.backgroundImage = "url('images/ico/tick.gif')";
			that.style.backgroundColor = 'white'
			that.style.border = '1px solid #ccc'
		}else{
			that.style.backgroundImage = "url('images/ico/cross.gif')";
		}
		
	}
	
}