function checkCForm(){
	var f = document.contact ;
	// required vars
	var reqVars = new Array (
		'name' , 'Please enter your name'  ,
		'email' , 'Please enter your email address'
	) ;	
	for (var i = 0 ; i  < reqVars.length; i+=2) {
		if (f[reqVars[i]].value == '' ) {
			alert (reqVars[i+1]) ;
			return false ;
		}
	}
	return true ;

}