function CheckSyntax(which,value){
	
	switch(which){
		case 'email':
			var pattern = /.*@.*\..*/;	
			break;
		case 'telefono':			
			//var pattern = /^(\+\d{2}\s)?[^a-z|A-Z]+$/;
			var pattern = /^(\d|\.|\-|\s|\+)*$/;
			break;
		case 'cf':			
			var pattern = /^[a-z|A-Z]{6}\d{2}[a-z|A-Z]{1}\d{2}[a-z|A-Z]{1}\d{3}[a-z|A-Z]{1}$/;
			break;
		case 'piva':						
			var pattern = /^\d{11}$/;
			break;
		case 'cap':						
			var pattern = /^\d{5}$/;
			break;
		case 'pr':						
			var pattern = /^[a-z|A-Z]{2}$/;
			break;
		case 'numero':						
			var pattern= /(^\d{1,3}(\.\d{3})*(,\d*)?$)|(^\d*,?\d*$)/;
			break;
		
	}

	if (pattern==null)
		return false		
	
	return pattern.test(value)

}